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Discussion Starter #61
@ MDamania, keredd1010 and VideoRookie - Thanks for the Feedback, nice to read about WEGAs being saved.


Years from now the HD CRT will be very difficult to find, imagine how many were disposed due to not doing an inexpensive repair.
 

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I recently found this video , a TV repair guy in Tulsa who was telling to replace the two driver chips on the Trinitron logic board in order to fix the 6 blink issue. His video doesn't show a lot, unfortunately, and he even cut the wire to the anode cap, not a good idea for most people to do at all, but he demonstrated that he did this just to get the board out completely, easily, and work at it on his table. (i.e. obviously he knows how to discharge it first.) Anyway, I was about to close the page here when I started browsing the comments.


Someone there made some claims that perked me up a bit. If you'll notice "Dan theman," he mentions that ic sockets aren't recommended because they can oxidize quicker and cause another failure. I suppose this idea carries some weight, more metal and material equals more potential for problems to happen when/if something rusts, but I would also think that if an ic socket were to oxidize easily then you might have bigger problems than a failed chip. Plumbing leaks, flooding, etc.? At any rate the thing that really stuck out to me was his mention that a third chip is needed in order to prevent the two driver chips from failing again. Unfortunately, nobody in the comment thread, not even Dan theman mentioned the name of this third part/chip to be replaced.


I've already messaged him asking about this through my youtube account. Anyway, everybody knows since the dawn of time here that replacing the two chips with MCZ3001DB fixes things. Does anybody know anything about this third part/chip as a culprit for the death of the other two? If this were known, it could be a preventive measure for anyone who hasn't had a failure yet.
 

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Discussion Starter #63

Quote:
Originally Posted by LiquidSnake  /t/1366567/sony-trinitron-wega-rlod-twenty-dollar-repair-guide/60#post_23175543


If you'll notice "Dan theman," he mentions that ic sockets aren't recommended because they can oxidize quicker and cause another failure. I suppose this idea carries some weight, more metal and material equals more potential for problems to happen when/if something rusts, but I would also think that if an ic socket were to oxidize easily then you might have bigger problems than a failed chip. Plumbing leaks, flooding, etc.? At any rate the thing that really stuck out to me was his mention that a third chip is needed in order to prevent the two driver chips from failing again. Unfortunately, nobody in the comment thread, not even Dan theman mentioned the name of this third part/chip to be replaced.


I've already messaged him asking about this through my youtube account. Anyway, everybody knows since the dawn of time here that replacing the two chips with MCZ3001DB fixes things. Does anybody know anything about this third part/chip as a culprit for the death of the other two? If this were known, it could be a preventive measure for anyone who hasn't had a failure yet.

There is sometimes a third MCZ3001D Chip inside some TVs located on the A Board, I mentioned this in the Guide in the OP. Usually that chip does not fail though.


As for the sockets, it could be an issue on a high amperage circuit which these chips are not. Corrosion is of little concern if the TV is kept in a climate controlled enviroment. I will never leave my HD WEGA out in the garage, I prefer the sockets in case of a future failure of the chips.
 

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Is there a post-able schematic of that section of the circuit?


I quickly 'searched up' that chip and it appears they were upgraded due to failure problems (of course maybe that's what that chip sales website wanted me to believe...). Well there's gotta be a reason, poor design or manufacture somewhere along the way (chip and/or circuit).


Yeah the IC socket oxidation potential issue seems off in left field. If worried put some of that anit-oxidation goop over the pins like they use on automotive electrical.
 

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Thank you CRTGAMER!!!


Your detailed Sony Trinitron WEGA Landfill Prevention Kit helped me resurrect our circa 2003 36 inch WEGA CRT TV that just started giving us the 6 Blink, 7 Blink error codes after trying to power on. The ironic thing about the initial failure was that my Parents have the identical unit (TV) out in Southern California and the same error occurred about two years ago. Their 230 lbs. beast unit is sitting in their garage on a wagon waiting for their Son (me) to come for a visit with a soldering iron in hand.


From another post in this forum from eclipsedave #108 http://www.avsforum.com/t/928945/you-have-a-sony-that-wont-power-on-and-the-standby-light-blinks-help-and-suggesti/90 along with CRTGAMER's help, we (a very talented Undergraduate and future Biomedical Engineering Graduate Student Mohammed) gently used all our force to move the monster to a big Rubbermaid laboratory cart that happens to be the same height as the place the Sony has been sitting since 2003. We removed the back cover, vacuumed the dust and found the two assumingly faulty MCZ3001D chips. I purchased 2 SHINDENGEN MCZ3001DB chips and sockets from Amazon.com http://www.amazon.com/gp/product/B005QOOACY/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1 for $10.00 total. This little job also gave me the excuse to buy a nice soldering iron also from Amazon.com, a Hakko FX888D-23BY Digital Soldering Station FX-888D http://www.amazon.com/gp/product/B00ANZRT4M/ref=oh_details_o02_s00_i01?ie=UTF8&psc=1 that worked really well!


We cut the plastic brace bar under the board with a Dremel hanging motor and Flex shaft rotary tool and cutting wheel to expose IC #2 as in steps 7-9 of eclipsedave's #108 post. To desolder, we used Desoldering Braid Wick with the Hakko soldering iron. The old chips removed nicely and the sockets were soldered in and new IC were pressed into the sockets. It is nice to know if the 6 Blink error code ever occurs again, one can purchase 2 new IC's and press them in the sockets without having to repair the board.


All in all it was a "Great Save!!" Yes, I may have splurged a little on the Hakko soldering iron, but I can justify its use with other projects I have put off and learn to start future hobbies (N scale model railroading etc.) Since the TV is in the family room, all DVR recording, kids Disney XD channels, WII Gaming and Sports are viewed on this unit, I just did not have $400+ to give to a repair person or the $1,500 for a new Sony LED TV. Yes, I will probably end up getting a 46 inch W802A LED TV so that I can connect all the HDMI cables/ports to our Yamaha A/V Receiver (much easier than home made component cables). But I can wait until the prices come down or just enjoy the CRT HD TV that much longer!! It is amazing to think that I can hit the "On" button on the Sony TV remote and the unit will Power On!!!


Thanks again everyone for all your suggestions, outstanding pictures, and step-by-step instructions!!!


Dan Martinez, Ph.D.

Houston, Texas
 

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This is so awesome dandog. Sony Trinitron is my all time favorite TV ever made- oh how I wish I had my old 27" one (model forgotten,it was beautiful in a real wood, but very modern looking console) it was "top of the line" back then and had PIP. It always makes my day when somebody repairs their old units rather than replace them with the cheap throwaway stuff out now. I do have a smaller Sony Trinitron in a white plastic case (1993 year) that has a much better picture than my new LG HDTV! On non-HD channels, the LG picture is awful- like an old VHS tape. I use the Sony with an analog-digital box, and it's a pleasure to view. It makes me sad just thinking about all the old TVs people toss out without a care in the world, to make room for some cheaply made Chinese import from Walmart.


People are terrified of repairing televisions. Sometimes all it needs is a new capacitor, or that little thingie what was needed in your case. I'm just a housewife, not a mechanically inclined manly man, and if even I, poor little old me
can do it, anyone can.


I just wanted to say "good job" on your repair and glad to see a person appreciating such a beautiful old television.


In my city of Phoenix I just found out we have something I hadn't seen in years - a TV repair shop! http://www.melrosetvrepair.com/


when's the last time you saw one of those, eh? I'm going to go in there this week just to look around and see what he's got.
 

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i successfully fixed my 36" HD Sony KD-36XS955 by replacing the original MCZ3001DB with new ones from Amazon.

Thank you for your detail explanation.
 

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Discussion Starter #68

Quote:
Originally Posted by betoringo  /t/1366567/sony-trinitron-wega-rlod-twenty-dollar-repair-guide/60#post_23617326


i successfully fixed my 36" HD Sony KD-36XS955 by replacing the original MCZ3001DB with new ones from Amazon.

Thank you for your detail explanation.

Congrats to all who have fixed their Sonys and thanks for the stories. Interesting that sometimes the revised chips can also fail though not as often.
 

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I did the repair this past weekend. thanks to your instructions, tv back up and running!!! never solder/desolder before, used desoldering braid instead of bulb. worked like a charm. thanks again!

ash
 

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Hi there ive had the 6-7 blink problem with my sony trinitron. i recently found your blog that details how to fix the problem by changing the two ic chips so i got the chips and followed the procedure on how to fix it but due to the fact that i have never soldered til this project a few of the trace pads on the board around the ic chip pins completely ripped off is there a way that my project can still be salvaged? Below is a picture link to view what it looks like. 

 

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Hi there ive had the 6-7 blink problem with my sony trinitron. i recently found your blog that details how to fix the problem by changing the two ic chips so i got the chips and followed the procedure on how to fix it but due to the fact that i have never soldered til this project a few of the trace pads on the board around the ic chip pins completely ripped off is there a way that my project can still be salvaged? Below is a picture to view what it looks like. 

 

salvaged?
 

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Quote:
Originally Posted by joe blak  /t/1366567/sony-trinitron-wega-rlod-twenty-dollar-repair-guide/60#post_24795859


a few of the trace pads on the board around the ic chip pins completely ripped off is there a way that my project can still be salvaged?

Solder a wire from the pin to the nearest solder joint on the trace. Use insulated wire where necessary (ex: long run). Alternatively, you can lightly scrape the green solder resist off the trace and solder the wire from a pin at the scraped point (i.e. if you're worried about a component falling at the nearest solder joint). It doesn't look like there's much IC pin protruding to solder to so pre-tin the end of the wire (this should be done at both wire ends anyway), then insert the wire down in the hole beside the pin and then solder the wire to the pin.
 

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Please tell us what wattage soldering iron did you use? They look like they've been desoldered with a blowtorch.
I haven't seen black solder before.


See if you can find pictures of the two IC locations from others who own the same model television. It might give a clearer picture of what is meant to go with what.
 

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Black solder? Maybe you're seeing the shadows.
 

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Quote:
Originally Posted by Floydage  /t/1366567/sony-trinitron-wega-rlod-twenty-dollar-repair-guide/60#post_24798666



Solder a wire from the pin to the nearest solder joint on the trace. Use insulated wire where necessary (ex: long run). Alternatively, you can lightly scrape the green solder resist off the trace and solder the wire from a pin at the scraped point (i.e. if you're worried about a component falling at the nearest solder joint). It doesn't look like there's much IC pin protruding to solder to so pre-tin the end of the wire (this should be done at both wire ends anyway), then insert the wire down in the hole beside the pin and then solder the wire to the pin.
Thanks floydage im gonna try it out an see if it works. But before i try it out how will i know if im scraping the right trace point on the board when connecting the ic pin to the wire then scrapped trace? 
 

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Quote:
Originally Posted by homerging  /t/1366567/sony-trinitron-wega-rlod-twenty-dollar-repair-guide/60#post_24799049


Please tell us what wattage soldering iron did you use? They look like they've been desoldered with a blowtorch. 
 I haven't seen black solder before.


See if you can find pictures of the two IC locations from others who own the same model television. It might give a clearer picture of what is meant to go with what.
i used a 40 watt soldering iron first but it was barely hot enough to heat the solder joint. The one im using now is a 60 watt works way better. the solder isn't black the lighting in the pic was bad i also did find some pics of the ic locations but its still difficult to tell where the pins on the left side of the photo below go.
 

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Quote:
Originally Posted by joe blak  /t/1366567/sony-trinitron-wega-rlod-twenty-dollar-repair-guide/60#post_24800094


Thanks floydage im gonna try it out an see if it works. But before i try it out how will i know if im scraping the right trace point on the board when connecting the ic pin to the wire then scrapped trace? 

You're welcome. I'm assuming you can see which trace goes to which pad upon closer inspection, a little harder for me to tell based on a pic; or at least you can see which pad a trace 'appears' to go to. Then confirm conductivity with a meter, although it might be difficult to get any contact in the vicinity of a pad.


P.S. I've noticed on other pics that some of those pins are unused/no pad/no solder.
 

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A 40 watt soldering iron should be hot enough to melt the joint almost instantly. Some poor quality irons have tips that don't conduct heat properly which I think was what happened.


A 60 watt iron sounds excessively hot to me. The supplied tip may be too large to work with easily too.
 

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Discoloration on sides of screen

Can you help please.
I have a Wega Trinitron KV HR36M31 that has developed Green sides would this be the Chip issue [have ordered replacements] or would this be another issue?
Wanting to repair rather than watch it go to the Tip.
any help appreciated
regards Glen
 

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