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Discussion Starter · #1 ·
When I say "older", I'm not referring to sets that are 15+ years old. I'm referring to models that are at least "HD Ready".

There is no 'easy' way to troubleshoot anything. The number one rule is "divide and conquer". Narrow down what/where the problem is. You don't have to have an electronics degree!

Below are posts with a wealth of information, but YOU have to spend some time looking through these if you want to save your device, whether it be a TV or anything else. I tried to group these to make the search easier. With many problems, you are not the only one that has experienced the issue.


In the past couple of years there has been a increased number of threads by members that are having a problem with their RPTV. Being the oldest of the three major current technologies, of course it's understandable. Sorry to burst your bubble, but mass produced consumer products do break, no matter how much you paid for them!


Many have little electronics experience with no idea what to do other than calling someone to take a look at the set. The problem with that is,

1. You pay a fee for the visit, even if nothing is or can be done,

2. Unless you know who you are dealing with, you take a chance that he is actually familiar with the set. No, I'm not kidding.



Judging by the owners one star reviews (posted in many sites), the last point is a problem with thousands of owners where the service visit consists of someone that has no or little idea what's wrong or isn't familiar with the product (even though he should be).
Most people do not take the time to find out in advance what choices (if any) they have for "authorized" service. When the time comes, they then find there is no "authorized" shop and the manufactures tries to come up with something, but usually fails according to the experiences posted. Read through the one star reviews from Amazon.com and see all the owners that wait for the service call, shops that don't return calls or return the visit at all.


Cutting costs by manufactures (some more than others) to a point of not having a service network except in major areas and/or not having a anything at all, but telling the customer to either deal with the store where you bought it or ship it back to them at your expense. Most of those are these 'oddball' names, or 'store brands' where you have no idea what/who actually made this thing. Those you wind up 'eating' and toss and never buy again. For the 'name' brands there might be a better way.


I did a series of "Whats' Inside" threads.
For those that have no idea what's involved inside a DLP RPTV, take a look here even if your set isn't from one of these manufactures.;


JVC;
http://www.avsforum.com/avs-vb/showthread.php?t=455897
http://www.avsforum.com/avs-vb/showthread.php?t=598154
http://www.avsforum.com/avs-vb/showthread.php?t=638602


Samsung;
http://www.avsforum.com/avs-vb/showthread.php?t=674513


Mits;
http://archive2.avsforum.com/avs-vb/...d.php?t=581146



Remember, divide and conquer the problem.
 

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Discussion Starter · #2 ·

Warnings:
1. With CRT type RPTV's, there are voltages over 50kv for the CRT's. No, they aren't "bulbs", but small picture tubes (usually 7") that produce the image. This is well past 'lethal'. If you aren't comfortable with this, just don't go there. Period! Newer designs (Plasmas & LCD's) still have higher voltages, but no where near those. 340v is common for DLP ballasts.

2. A Service Manual will not tell you what's wrong with the set. It will usually not give examples of problems unless they are well known issues. Just as a OBD tester for vehicles will not tell you what's wrong, a electronic service manual will just show you whats inside and what the settings, voltages & waveforms should be. This won't fix the set for you.



A. Obtain the Service Manual for your product right off the bat even if you have no idea what any of that is about. Why? You don't know when you might need it and even though you might not be the one trying to 'fix' the set, it will help someone that is. Stranger or friend. NO service facility will have manuals for every single TV out there. It isn't practical. Just searching for a Service Manual, 95% of the hits are for owner/user manuals which usually can be had from the manufactures web site.


B. Search a number of sites where you can get rebuilt replacements assemblies & circuit boards other than direct from the manufacture (if they would even sell them to you without an account).

Service menu codes (Yes, you can get into trouble here. Enter at your own risk);
http://www.factory-reset.com/wiki/Category:Service_Menu

Free Service Manuals:
http://fileshare.eshop.bg/index.php?what=search (one of the best)
http://www.opweb.de/en/modelsbytype.php?type=TV&class=Audio,%20Video,%20TV,%20Multimedia

http://www.user-service-manuals.com/index.html
http://www.fixdevice.com/smanuals/file/8932.html
http://www.free-service-manuals.com/...ion/index.html (register first)
http://www.download-service-manuals.com/index.php
http://www.iusermanual.com/
http://www.techlore.com/group/2/list_downloads

Pay Service Manuals (usually under $20):
http://www.getmanual.com/index.php?nav=cat_brands
http://www.servicemanuals.net/service.aspx
http://www.service-docs.com/store/A-...20Manuals.html
https://www.completeservicemanuals.com/index.php
http://www.tradebit.com/G/manuals/23-tv

Replacements parts and assemblies;
http://www.discount-merchant.com/dlp-tv-parts-s/403.htm
http://www.encompassparts.com/

http://www.parts-link.com/ (a site to help searching for parts)
http://www.hermanelectronics.com/Her.../OEMSearch.asp
http://www.partstore.com/Content/Cat...onics-TVs.aspx
http://www.onlinecomponents.com/
http://www.moduslinkptstvboards.com/Search.aspx?m=19 (Boards & Light Engines)

Replacements lamps;

http://stores.ebay.com/Dalbani-Corporation/TV-Lamps-/_i.html?_fsub=3013886011&_sid=730728371&_trksid=p4634.c0.m322

http://stores.ebay.com/DLPTVLAMPS (Click on General lamp info in the lower left corner)

http://www.newdlp.com/MITSUBISHI-915P049010-MITS-69490-1E.htm

Discrete components;
http://www.moyerelectronics.com/Depa.../Products.aspx
http://www.questcomp.com/Product.aspx?page=Products
http://www.nteinc.com
http://www.tselectronic.com/shop/
http://www.4starelectronics.com/part_search.asp
http://www.usbid.com/ (Hard to find components)


For the last group, there is always Radio Shack (but don't expect much, most will have to be ordered anyway) or your local electronics supplier (if you have one).


Additions & corrections are welcome.


 

 

Updated lamp links
 
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Discussion Starter · #3 ·
The 2nd reason for a manual is calibration and adjustments!

1. Procedures to enter the Service Menu to 'tweak' settings that have drifted over time, especially with CRT RPTV's, or just to 'fine tune' what the manufacture has set.

2. Needing to do a full factory reset, either within the Service menu or from a set of button presses either on the remote and/or the front panel to restore the set to a 'out of the box' condition to correct 'flaky' type issues.


It's wise to either write down all settings, or better yet take photos (multiple clear shots saving the best for further reference) since there is no way anyone could remember all of them in case mistakes are made. Again, the manual will not tell you how to calibrate the set except for possible basic settings. In fact, most adjustment points won't even be listed since it's assumed a ISF calibrator would be doing this.


But, be warned, you can easily get yourself into trouble if you push 'enter' or a right navigation button at the wrong time.
 
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Discussion Starter · #4 ·

For those who are familiar with electronics, here are some links for various sets involving repairs and/or adjustments that are popular. I did not include "Owners" threads;


Samsung;

http://www.shopjimmy.com/samsung-mitsubishi-toshiba-4719-001997-dlp-chip-2.htm  (DLP chip replacement video)
http://www.avsforum.com/avs-vb/showthread.php?t=1397016 (fan replacement)
http://www.avsforum.com/avs-vb/showthread.php?t=1107926 (DMD board)
http://www.avsforum.com/avs-vb/showthread.php?t=1216793 (Optical block)
http://www.avsforum.com/avs-vb/showthread.php?t=1050735 (Color wheel)
http://www.avsforum.com/avs-vb/showthread.php?t=1215572 (White dots)
http://www.avsforum.com/avs-vb/showt...s#post19064778 (stuck mirror replacement)
http://www.avsforum.com/avs-vb/showthread.php?t=1133223 (LED failure)
http://www.avsforum.com/avs-vb/showthread.php?t=1094240 (Won't pwr. up)
http://www.avsforum.com/avs-vb/showthread.php?t=1090383 (Hort. lines)
http://www.avsforum.com/avs-vb/showthread.php?t=1212764 (Fan error)
http://www.avsforum.com/avs-vb/showthread.php?t=1284859 (Doesn't pwr. up)
http://www.avsforum.com/avs-vb/showthread.php?t=1257506 (Class action)
http://www.avsforum.com/avs-vb/showthread.php?t=1188431 (Bright spot on screen)
http://www.avsforum.com/avs-vb/showthread.php?t=951807 (Not supported mode)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks; P series)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks Tweaks; P series)
http://www.avsforum.com/avs-vb/showt...light=settings (Tweaks; S series)
http://www.avsforum.com/avs-vb/showt...light=settings (Tweaks; LED driven series)
http://www.avsforum.com/avs-vb/showp...44&postcount=3 (CCA indexing adjustment)
http://www.avsforum.com/avs-vb/showthread.php?t=1376634 (Samsung LED driven DLP HLxxA750A1F PS upgrade)

Mits;
http://www.avsforum.com/avs-vb/showp...33&postcount=1 (firmware update for 3D sets)
http://www.avsforum.com/avs-vb/showthread.php?t=881668 (Green blinking light-caps)
http://www.avsforum.com/avs-vb/showthread.php?t=1181213 (No power-CRT)
http://www.avsforum.com/avs-vb/showthread.php?t=1176760 (Bad caps)
http://www.avsforum.com/avs-vb/showthread.php?t=1257122 (Light Engine replacement)
http://www.avsforum.com/avs-vb/showthread.php?t=1207870 (Bad HDMI audio)
http://www.avsforum.com/avs-vb/showthread.php?t=979952 (Error 34 lamp)
http://www.avsforum.com/avs-vb/showthread.php?t=1180911 (Screen flicker)
http://www.avsforum.com/avs-vb/showthread.php?t=1181213 (No power)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)


Sony;
http://www.avsforum.com/avs-vb/showthread.php?t=1071754 (Four blinking lights)
http://www.avsforum.com/avs-vb/showthread.php?t=1186752 (Green haze)
http://www.avsforum.com/avs-vb/showthread.php?t=865360 (Optical block install)
http://www.avsforum.com/avs-vb/showthread.php?t=1047205 (Pink spots)
http://www.avsforum.com/avs-vb/showthread.php?t=1254481 (Lawsuit)
http://www.avsforum.com/avs-vb/showthread.php?t=1086180 (Recall)
http://www.avsforum.com/avs-vb/showthread.php?t=1204494 (Blue discoloration)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showt...light=settings (Tweaks)

http://www.avsforum.com/t/1216793/sony-optical-block-talk-and-repair-assitance (Optical block)


JVC;

The biggest issue with DILA was chromatic aberration & convergence issues. Unlike DLP's, these along with the Sony version of LCoS uses three devices, not one;
http://www.avsforum.com/avs-vb/showt...&highlight=jvc
http://www.avsforum.com/avs-vb/showt...light=settings (Tweaks)

http://www.avsforum.com/t/1257270/hd-p70r1u-color-engine-melted (light engine melted)

http://www.avsforum.com/t/1255618/jvc-optical-block-science#post_18756836 (optical block)


Toshiba:

http://www.shopjimmy.com/samsung-mitsubishi-toshiba-4719-001997-dlp-chip-2.htm  (DLP chip replacement video)
http://www.avsforum.com/avs-vb/showthread.php?t=834727 (Ballast)
http://www.avsforum.com/avs-vb/showthread.php?t=1091831 (Blinking red light)
http://www.avsforum.com/avs-vb/showthread.php?t=611627 (Toshiba lamp failure)


Hitachi:
http://www.avsforum.com/avs-vb/showthread.php?t=351829 (V500 issues)
http://www.avsforum.com/avs-vb/showthread.php?t=842581 (HDMI shift F59)
http://www.avsforum.com/avs-vb/showthread.php?t=1037039 (Glare reduction F59)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Tweaks)
http://www.avsforum.com/avs-vb/showthread.php?t=790702 (CRT RPTV Tweaks)
http://www.avsforum.com/avs-vb/showt...light=settings (Tweaks)


Panasonic:
http://www.avsforum.com/avs-vb/showthread.php?t=958640 (Ballast kit)
http://www.avsforum.com/avs-vb/showthread.php?t=1157338 (Yellow tint)
http://www.avsforum.com/avs-vb/showthread.php?t=452174 (Tweaks)


CRT RPTV's;
http://www.avsforum.com/avs-vb/showthread.php?t=695922 (CRT thread)
http://www.avsforum.com/avs-vb/showthread.php?t=1129474 (Philips-Hi voltage)
http://www.avsforum.com/avs-vb/showthread.php?t=690782 (Philips-changing coolant)
http://www.avsforum.com/avs-vb/showthread.php?t=1010146 (CRT RPTV tweaking)
http://www.avsforum.com/avs-vb/showthread.php?t=901544 (CRT RPTV convergence fixes)
http://www.avsforum.com/avs-vb/showthread.php?t=968812 (RCA flashing light 10x)
http://www.avsforum.com/avs-vb/showt...ghlight=tweaks (Pioneer tweaks)



Light Engine rebuilding;
http://www.avsforum.com/avs-vb/showthread.php?t=926204


Lamp replacement (Mits was the example);
http://www.avsforum.com/avs-vb/showthread.php?t=1256432


Lens cleaning (Mits was the example);
http://www.avsforum.com/avs-vb/showt...highlight=lens

 

LCD Backilght testing;

http://www.avsforum.com/t/1436588/measuring-ac-off-of-an-inverter

 

added DLP chip replacement video links
 

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Discussion Starter · #5 ·

The following sites are for the somewhat advanced person who can do component level repair. These are NOT for the beginner;

A outside thread devoted to this same subject with the most complete source of information (other than here
) ;
http://www.hometheatershack.com/forums/service-support/


A Forum devoted to DLP's;
http://www.fixyourdlp.com/forum/view...cc028f69b42e62


This calbration forum has a wealth of 'repair' & troubleshooting information:
http://www.curtpalme.com/forum/viewforum.php?f=42

Ballast replacement (Sammy 'S' series example);
http://www.fixyourdlp.com/guides/sam...p47-00033a.php

 

S amsung color wheel replacement;

http://www.jangro.com/samsung-dlp-replace-color-wheel/


List of "Repair" sites;
http://www.techlore.com/forums/70/Te...ectors/threads (excellent repair forum)
http://www.riddledtv.com/
http://www.riddledtv.com/forums/
http://www.dr-fix-it.com/tvrepair.html
http://www.avrepair.info/tips.htm
http://repairfaq.ece.drexel.edu/sam/tvfaq.htm


Specific 'convergence' repair;
http://home.earthlink.net/~oleg.fili...ergenceFix.htm (Pioneer SD-643HD5)


For those with a problem that couldn't be resolved, try writing to the CEO and/or president of the company. It does work!;
http://archive2.avsforum.com/avs-vb/...d.php?t=593005 (posts #25 & 38)


BTW, I have concluded long after I posted this, that this "4x3 cropped" problem is common to most HDTV's. I find it hard to believe most can't/don't see it.

 

 

Added color wheel replacement.
 

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Discussion Starter · #6 ·
On a somewhat related subject, there was a rash of capacitor failures from the early & mid 2000's due to poor Taiwanese design, cost cutting and, believe it or not 'industrial espionage'.
It was a widespread problem, not limited to TV's and computer motherboards.
Quote:
An incorrect electrolyte formula within a faulty capacitor causes the production of hydrogen gas (confirmed by mass spectrometry), leading to bulging or deformation of the capacitor's case, and eventual venting of the electrolyte.......The capacitance may degrade to 4% of the original value, as opposed to an expected 50% capacity degradation over the lifetime.
Quote:
Circa 2005 Dell spent some US $150 million replacing motherboards entirely and another $150 million on the logistics of determining whether a system is in need of replacement. HP reportedly purged its product line in 2004.

BTW, Dell & HP do not manufacture MB's. They just assemble ones made by OEM's.



Here is a link on the subject. Most of this made reference to computer MB's, but this affected TV's also.;
http://en.wikipedia.org/wiki/Capacitor_plague
 

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Discussion Starter · #7 ·

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Can anyone tell me where to get a service manual for the AKAI PTH5498 54" 1080i rear projection tv? I need to readjust the settings in the service menu such as VBO ect. Does anyone know what the proper factory parameter settings are from the geometric screen on this set? I need all the settings for the geometric.
 

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Discussion Starter · #9 ·
The problem with 'no name' & 'oddball' name products is getting them serviced. In this case, even finding a service manual. For those reason, I avoid these like the plague.



I found their history interesting, though I saw no mention of, at one time I was under the impression Akai was owned, or connected with Sony;
Quote:
In early 2003, the consumer electronics company began undergoing a re-exposure by marketing various rebranded video products manufactured by Samsung.

Which was taken from here;
http://en.wikipedia.org/wiki/Akai


You can try looking through these;
http://www.avsforum.com/avs-vb/showthread.php?t=725865
http://www.techlore.com/forum/thread...UNG-54--1080i/
http://forum.ecoustics.com/bbs/messages/2/1525.html
 

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Discussion Starter · #10 ·
From another member;
Quote:
Originally Posted by Frankg666 /forum/post/20357890


I was having problems with my Panasonic PT-50LC14, had a big yellow blotch in the screen.


The problem was the blue polarizer on one of the lens had burnt out. A member suggested to buy a small sheet of Vermillion 2x2 stock #AX27803 polarizer for $6.50 from anchoroptics. I called them, it seems they no longer sold the 2x2 and only sold the 8x11 Vermillion stock #AX27813 for $38.25.


All said and done it cost me $52.00 and it was well worth it. I tore into my projection tv and repaced it and it works better than the day it was bought.

If anyone has this problem and needs the Vermillion polarizer feel free to contact me. I can also answer any questions you need to ask on the replacement. Thanks AVS members, I could not have fixed my TV without your help



(email: [email protected] )
 

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I have a Toshiba 65" HDTV I bought on 2000 that the blue color convergence is shot. Called a TV repair service and they checked with Toshiba and said there was a $27 part that would fix it. Unfortunately that part was no longer available. Checked all over and indeed that part is unavailable. Now looking for a new HDTV.


Rick R
 

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Quote:
Originally Posted by Rick_R /forum/post/20402976


I have a Toshiba 65" HDTV I bought on 2000 that the blue color convergence is shot. Called a TV repair service and they checked with Toshiba and said there was a $27 part that would fix it. Unfortunately that part was no longer available. Checked all over and indeed that part is unavailable. Now looking for a new HDTV.


Rick R

You might want to visit the Don't Dump Your CRT thread, and post this issue there. There are people on the forum who might point you in the right direction regarding that convergence chip.
 

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(CROSSPOSTING)


I'm not sure if this is the right place to post it but I'm gonna try.


I recently bought a Light Engine off of Amazon.com from a dealer for very very cheap (almost too cheap? $200), and replaced my current Light Engine. It was giving me the hundreds of black/white/flashing dots.


After replacement, though, the TV won't power on. I've checked all cables, they are connected, and the lamp goes in fine. I'm getting a steady flashing red light after it clicks, tries to turn on, but doesn't.


Is there a way to get an error code from this or did I get a bad light engine? The lamp was fine prior to replacing the light engine. Could it be that something isn't screwed to the unit correctly? The DVI cable connecting the TV to the light engine is in but not screwed in (for some reason one screw is not connecting.)


Thanks for any help. I'm trying to remain optimistic with this tv but I'm really considering throwing it out the window.


Is Mitsubishi still doing anything for these TVs even if they're out of warranty? Mine is about a year out of warranty.
 

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Discussion Starter · #14 ·
1. Do you have the service manual?

2. You can't just 'swap' parts like swapping a PS or similar.


Data from the old 'engine' has to be copied to the new engine. I'm not familiar with the whole procedure since I never would consider doing it. Unless there is another member that has and can post, you have a real problem.
 

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I have a 73" DLP tv from mitsubishi, with a damaged sceren (heavy scratches inside - don't know why!). I need a new sccreen - do you know where I could get a new front screen replacement?


I can upload pics if anyone wants to see them.


This is a c10 (Dell model), and I bought it refurbed from a warehouse. Picture is a little blurry too, but not bad. Looks great with 3dc1000 glasses / kit!


I just really need the screen to be fixed, it looks terrible!


I called mitsubishi, and they won't sell the part to me, they gave me the local # of a repair shop, who also wouldn't sell the part - but will fix it for $500!!! Wayyyy too much, I just want the part, I can take it apart myself and put the screen in, once I have the part.


Thanks in advance for any suggestions.
 

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Discussion Starter · #16 ·
It would probably have to be purchased through a authorized shop.


Have you looked through the 'sticky' at the top of the page yet?
 

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Discussion Starter · #18 ·
I don't know what this "C10" is through Dell. I didn't know Dell sells re-

branded Mits DLP's.

I don't know of any dedicated thread on screen replacement, but those off site site links might be where to look;
http://www.avsforum.com/avs-vb/showt...8#post19929998
 

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Discussion Starter · #19 ·
Here are page captures from the service manual for the 2007 xx732 series of DLP's:


 
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