This Sony KDL-50W815B starts up and shows picture for a few seconds, then suddenly goes to errormode with 3 blinks.
It has external DC-powersupply.
Any advice?
It has external DC-powersupply.
Any advice?
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Re: Sony KDL-50W815B 3 blinks...
Have you checked that the incoming DC supply voltage is not dropping. Power packs do become faulty.Willing to help but I'm no expert. -
Re: Sony KDL-50W815B 3 blinks...
Test the external PSU with another reasonably sized load and see if the power sustains or you could us another same sized PSU to test the TV. What is the Output Vdc??...It should be written on the PSU's label....I gestimate about 24Vdc.Comment
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Re: Sony KDL-50W815B 3 blinks...
0 no red standby light-check powercord or bad main logic board or power board, check standby volts
1 red blink not used
2 red flashes is bad power board, solution replace power board
3 red flashes is bad main logic or power board, check for standby volts if ok replace main logic board
4 red blinks- can be LD board or main logic board, check inverter board wires for arcing to ground
5 red flashes- bad lcd panel connection or internal lcd short- squeeze bezel to locate bad connection
6 red flashes- backlight issue, bad main board, or power board or inverter boards- check standby volts on power board. "backlight on" volts should be 3-5v from main logic board then 24v to inverter
7 red flashes- main board over heating, can be short on power board or main logic board
8 red flashes- main board sp prot, try power reset, update with usb, or replace main logic board
9 blinks- check fan error, * if TV has fans
10 blinks- digital board or tuner board * some Sony TVs may not have this board
11 red flashes- bad main board, bad IC, replace main logic board
12 red light flashes is tcon error bad T-con board or bad LCD panel, replace tcon board usually
13 red flashing is backlight balance error bad lcd panel or inverter boards (common) or bal board on kdl-52v4100 only, replace inverter board usually then main logic board
14 red flashes HFR- bad TCON or Bad LCD panel, replace tcon board. unplug tcon board if tv stays on without tcon board replace tcon board. "como sony tv reparación"Comment
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Re: Sony KDL-50W815B 3 blinks...
Thanks for all kind replies.
Suddenly it started to blink 8 times... Seems like a faulty mainboard
Wonder if it's worth it to try update FW by USB ?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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