Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
As promised, giving feedback about repair results. After replacing t-con tv is working, replacing caps get rid of double-triple restarting when powering tv with hdmi to laptop and buzzing sounds from back of tv (i could see that laptop screen was blinking couple times before it finally connected, now it always works on 1st attempt)
final cost
damaged tv - free
caps ~ 2 dollars
t-con ~ 11 dollars
What i've noticed
on broken t-con part KL5T3001 didnt even get...
Ancymon0
Member
Last Activity: 03-28-2017, 06:46 AM
Joined: 03-17-2017
Location: Poznan
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
I also found datasheet of my lcd panel so i might be able to check if there is signal between main board and t-con before i replace it if recapping of psu wont help. service manual for tv didnt include lcd panel and t-con board. (still have only multimeter, not osciloscope, but always something)
if anyone needs it in future i will make stamp for google search
Samsung LE32S71B
t-con 320WB02C SD
panel CHUNGHWA CLAA320WB02...Leave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
I found t-con on auction site. I will head to electro shop on monday, recap psu check and what will happen. If nothing changes i will probably order t-con. I will update topic with results
Thanks for assistanceLeave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
Top left is swollen and cracked one is on the right just below mainboard ribbon
...Leave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
Two left disconnected - right part of screen gets white, left part of screen is black
Two right disconnected -, right is white, left is black but with one brighter vertical stripe
same if i restart tv
during that test i was playing youtube by hdmi so sound was still up on tv speakers...Leave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
I was checking testing poits on left side of t-con board(there is problem with it, because i have no idea which one should give which voltage). Some of them look ok according to measurements made by people in web, but noone checked TP510 - i dont have any voltage here. there is also no voltage on TP1-3 and TP7
Wanted to check LVDS cable, but main boards listed in manual are different than the one i have ( BN94-01202A) and i dont know which pin is what for...Leave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
diconnected
all connected, black screen with backlight working
1st ribbon disconnected, right half of screen went white
2nd ribbon, nothing changed
3rd ribbon, left side of screen got blue, green and brighter green colour
4th whole screen went black with backlight workingLast edited by Ancymon0; 03-17-2017, 02:18 PM.Leave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
i measured that blue SMD which i suppose is fuse, there is a 12.3V on both ends. I dont see any other SMD that looks like fuse on that board...Leave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
Sadly cannot find any fuse on the t-con board, i think i will have to find some service manual with schematics
#EDIT I think there is a fuse under 1R0 resistor (blue one with N on it - so small that i cannot read it clearly), there is continuity between ends, didnt try to measure voltage as im not sure if im touching proper thingLast edited by Ancymon0; 03-17-2017, 11:08 AM.Leave a comment:
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Re: Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
Is there any possibility that changing caps will fix the problem and everything will start working as intended?Leave a comment:
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Samsung TV, sound ok, backlight ok, no picture - model LE32S71B
Hello, My girlfriend parents had a samsung tv that "broke" couple years ago. They bough new one and were going to finally throw old one because it was taking place in garage, decided to take it to my home and try to check if it's possible to make it alive again as she has only 20' monitor
TV turns on, backlight is working fine, theres sound when i connect it by HDMI cable, but there is no picture at all.
I measured voltage on power supply board and it looks fine (just checking if its ok with description next to pins)
I found 2 faulty capacitors...Last edited by Ancymon0; 03-17-2017, 10:35 AM. -
Re: New Members - please post your introductions here
Hello everyone
My name is Karol, i live in Poland and usually make as all rounded mr. HandyLeave a comment:
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Re: Total failure/loss on hard drive.
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