I picked up this tv from a co-worker for $25 in hopes for a cheap and easy fix, or it's gonna be a parts tv. My co-worker said that it started acting up after a storm. It will power up and run fine for about 10 minutes then the screen wil flicker a few times and then shut off and blink 4 times. It will start up again after 30 min of being unplugged. I have searched all of Google and nothing "easy" has worked, so it's time to dig deep.
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Re: Sony KDL-40S2000; on 10 min then 4 blinks
Power SupplyAttached Files -
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Re: Sony KDL-40S2000; on 10 min then 4 blinks
Inverter boardsAttached FilesComment
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Re: Sony KDL-40S2000; on 10 min then 4 blinks
Any ideas?Comment
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Re: Sony KDL-40S2000; on 10 min then 4 blinks
Ok next to the connectors on the Power Supply you will see voltage labels... For each connecter test each pin using your meter set to 20VDC - Black to chassis and Red to the pin. You want to do this when the set is switched on and the LED flashing after it shuts off.
List the label and reading you get like this for EG :
Connector 1
Pin 1 - STBY - 5v
Pin 2 - 12v - 0v
etc
etc
Connector 2
Pin 1 - etc
etcComment
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Re: Sony KDL-40S2000; on 10 min then 4 blinks
Well, this is weird! After reinstalling the inverter boards and power supply its working fine. Its been on and off for more than 3 hours with no issues. If it start acting up again I will bump this post.Comment
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Hi everyone!
I have a Sony KD-65A1 TV with a fault – 4 red LED blinks. After disassembly and visual inspection, I found that the G76 power board and DKA board had been replaced. It is also possible that TCON was replaced, but I am not sure – there are a few marker marks that could be factory-made.
Based on assumptions, the previous service attempted to solve the issue by replacing potentially faulty components. I decided to investigate further, found a service manual, and figured out a way to power up the power supply unit autonomously and put the OLED panel and... -
Hi I'm new to trying to repair TVs, but I saw a broken OLED offered for a reasonable price and thought I'd try my hand at it.
I found the service manual, which was critical to know where to probe.
https://www.manualslib.com/manual/20...1e-Series.html
With it I was able to determine that my DKA board was bad, when P_ON#1/2 gets enabled REG_12 on the DKA board collapses. I'm assuming one of the downstream regulators has a short, but I couldn't work out which rail/component and replaced the DKA board entirely.
Unfortunately the 5-blinks... -
Hi all,
I have the subject TV and it will work normally sometimes but suddenly go black and give the 2 red blinks blink code. When this happens, I check the power supply board voltages and all I have is the Standby 3.3V and BL_ERR 2.2V. When it's working normally, all power supply board voltages look normal and stable. I've checked the backlights with a tester and they all test good. I've also read that the 2 red blinks is a faulty power supply board, so could it be throwing up an erroneous BL_ERR?
Any Sony experts out there that can help??... -
I was using this TV for 5 years before it stopped working. I like this TV and would love to fix it myself.*
When I press the power button, the white led comes on (sony calls the module smart core) and then it switches over to 5 red blinks. No screen, no backlight, no relay click, nothing. I have disassembled the tv and found the service manual for 75x940e online. The manual suggests a faulty power board, TCON or the panel.**
The standby pin is at 3.3V. Fuses on the mainboard and TCON are fine. Caps on TCON also seem to be fine. When I turn on the tv the white led... -
Hey guys, got this Sony that turns on momentarily and then goes black with 4 blinks of the standby light. I can't find a service manual, but best guess was the Local Dimming board based on a similar TV saying LD_ERR or BCM_ERR. I found a replacement, but it didn't work. Before I put more money into replacement boards, Im wondering if anybody has seen this issue and what worked for them, or has the service manual for this specific TV.
Thanks!...
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