HELP Samsung PN58B860 image is dim grainy and there is a dark spot - Page 2 - AVS Forum
Forum Jump: 
Reply
 
Thread Tools
post #31 of 43 Old 03-08-2013, 01:22 PM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by tom669 View Post

The LVDS cable runs from the main board, which has the video inputs, to the control board, which is the board that has the 3-4 jumper on it.

TOM, I removed the LVDS cable and added a jumper on pins 3-4 and turned on the TV. Nothing show up on the screen.
str8maxn is offline  
Sponsored Links
Advertisement
 
post #32 of 43 Old 03-08-2013, 01:31 PM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I forgot to mention that there is a flashing green LED light on the logic board.
str8maxn is offline  
post #33 of 43 Old 03-08-2013, 05:03 PM
Advanced Member
 
tom669's Avatar
 
Join Date: Feb 2013
Location: Leeds, UK
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 70
This is unexpected. I have to be honest; these TVs are alien to me, I've only worked on older Samsung plasmas.
Do you get good Vs/Va from power board when powered up?
tom669 is offline  
post #34 of 43 Old 03-09-2013, 02:22 PM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by tom669 View Post

This is unexpected. I have to be honest; these TVs are alien to me, I've only worked on older Samsung plasmas.
Do you get good Vs/Va from power board when powered up?

No worries Tom, I'll take any advise you have.

Yes, Both Vs and Va tested OK. I found the Y board and two buffer board on ebay pretty cheap, I am hoping replace them will fix the tv.
I should get them mid next week. I'll let you know how that goes. Thank you very much for the support.

JM
str8maxn is offline  
post #35 of 43 Old 03-09-2013, 03:07 PM
Advanced Member
 
tom669's Avatar
 
Join Date: Feb 2013
Location: Leeds, UK
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 70
I hope it fixes it.
tom669 is offline  
post #36 of 43 Old 03-14-2013, 02:58 PM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by tom669 View Post

I hope it fixes it.


Tom, SUCCESS!!!!!! It looks like it was a bad Y board. The X board also needed replacing. I found some broken welds on some very small resistors. So small I lost them when I tried to repair them. The two replacement buffer boards dont appear to work. I don't get an image when I installed them. Do you recommend getting new buffer boards? Or am I good now? (since I goot a good Image)


Thanks again Tom.

JM
str8maxn is offline  
post #37 of 43 Old 03-15-2013, 03:03 PM
Advanced Member
 
tom669's Avatar
 
Join Date: Feb 2013
Location: Leeds, UK
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 70
Nice to hear that. I'd keep the current buffers. Often, these parts are harvested from cracked screen TVs. If the TV is switched on when it is cracked, or powered on after the event, the buffer board can be damaged by the shorted electrode lines. I would send the faulty buffers back. What's the total investment for this 58"?
tom669 is offline  
post #38 of 43 Old 03-15-2013, 03:16 PM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by tom669 View Post

Nice to hear that. I'd keep the current buffers. Often, these parts are harvested from cracked screen TVs. If the TV is switched on when it is cracked, or powered on after the event, the buffer board can be damaged by the shorted electrode lines. I would send the faulty buffers back. What's the total investment for this 58"?

That's exactly what I did; Keep my buffers and sent the bad one back.
Over all cost:

Samsung 58 $175.00 (but it was sold to me as 65 inch cuz of the box otherwise I would have tried to get it lower)
X board $ 25.00
Y board $ 50.00
Total $250.00
str8maxn is offline  
post #39 of 43 Old 03-15-2013, 03:16 PM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by tom669 View Post

Nice to hear that. I'd keep the current buffers. Often, these parts are harvested from cracked screen TVs. If the TV is switched on when it is cracked, or powered on after the event, the buffer board can be damaged by the shorted electrode lines. I would send the faulty buffers back. What's the total investment for this 58"?

That's exactly what I did; Keep my buffers and sent the bad one back.
Over all cost:

Samsung 58 $175.00 (but it was sold to me as 65 inch cuz of the box otherwise I would have tried to get it lower)
X board $ 25.00
Y board $ 50.00
Total $250.00
str8maxn is offline  
post #40 of 43 Old 03-17-2013, 03:49 AM
Advanced Member
 
tom669's Avatar
 
Join Date: Feb 2013
Location: Leeds, UK
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 70
Not bad for a 58" 1080p Smart TV! Amazing what people will throw out for needing just $75 in parts.

I still feel jammy for picking up the 46" Panasonic 1080p plasma with a fault for under $110 (£70 in the Queen's money), and finding the only fault to be a loose cable.
tom669 is offline  
post #41 of 43 Old 03-18-2013, 09:12 AM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by tom669 View Post

Not bad for a 58" 1080p Smart TV! Amazing what people will throw out for needing just $75 in parts.

I still feel jammy for picking up the 46" Panasonic 1080p plasma with a fault for under $110 (£70 in the Queen's money), and finding the only fault to be a loose cable.

Sounds like you got a great deal too..

Tom, Thank you again for all the help. This is my 3rd TV I fix. It started with my own when it went out and I found it a challege to try to fix it. Since then both my kids are befefiting for someone else's trash.
on to the next one....


JM
str8maxn is offline  
post #42 of 43 Old 03-20-2013, 05:37 AM
Advanced Member
 
tom669's Avatar
 
Join Date: Feb 2013
Location: Leeds, UK
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 70
I've done over 50 repairs! Family got a 40" 1080p Samsung LCD, I got a 46" Panny plasma (I'm not keeping any crappy LCD smile.gif) and my dad got a 50" NEC plasma (a pretty old model, but it suits him because it's quite big and he can see it well, it's 720p only and struggles with black levels but that's not a problem for average TV.) In total? All three were acquired for under £160, all in faulty condition and fixed very cheaply. I think I only spent £10 on the capacitors for the Samsung. The NEC had a failed shorted audio board, so I unplugged that and gave my dad a 5.1 amp as a birthday present which cost £20 (also faulty until I fixed it) and the Panasonic was, as mentioned, a loose LVDS cable.
tom669 is offline  
post #43 of 43 Old 04-16-2013, 04:19 PM - Thread Starter
Member
 
str8maxn's Avatar
 
Join Date: Nov 2012
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by tom669 View Post

I've done over 50 repairs! Family got a 40" 1080p Samsung LCD, I got a 46" Panny plasma (I'm not keeping any crappy LCD smile.gif) and my dad got a 50" NEC plasma (a pretty old model, but it suits him because it's quite big and he can see it well, it's 720p only and struggles with black levels but that's not a problem for average TV.) In total? All three were acquired for under £160, all in faulty condition and fixed very cheaply. I think I only spent £10 on the capacitors for the Samsung. The NEC had a failed shorted audio board, so I unplugged that and gave my dad a 5.1 amp as a birthday present which cost £20 (also faulty until I fixed it) and the Panasonic was, as mentioned, a loose LVDS cable.

Tom,

If you can help once more that would be great. I picked up another TV.


http://www.avsforum.com/t/1468576/samsung-58-pn58b650s1fxza-help-needed
str8maxn is offline  
Reply Plasma Flat Panel Displays

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off