Set was on and I heard a loud pop then went into standby mode. I was hoping it was a bad cap but upon visual inspection...to no avail. I noticed a few months prior that with no warning the video would go out but the audio would play. I could turn set off then right back on and it would play all day. I did some checking and I found F002 open. I know something is shorted, but I replaced the fuse anyway just to eliminate any curiosity I had and it blows instantly. I have my 18v source voltage at R708. Rightfully so there's no voltage at SAN1 and my next step was to lift the cable at SAN1 to take it out of the circuit because I think something is shorted on PCB2676. Any assistance would b greatly appreciated.
Sony KDL-40S2000 Chassis 40WAX2 in standby mode...4 blinks
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Re: Sony KDL-40S2000 Chassis 40WAX2 in standby mode...4 blinks
I would flip the board upside down. There must be components underneath. Can we get a picture of it?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
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by Seb932Hi,
i'would like to fix my not working LG 49UB850V tv.
Symptoms:
-AC plugged in, Standby LED not working
-Switching on, Standby LED blinks 3x. LD2300 on mainbord lights up and after ~30s LD701 on PWS board starts to blink 5x repetetive
Checked already:
-Powersupply Output in Standby => 3.5V ok
-Switching On => PWR_On on P201 goes high and 3.5/12/24V are present on P201
Any suggestions what to check next?
Thanks in advance! -
by AK_777Hi 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... -
by rabbitukI have got a Sony HCD-BX7700dbi that isn't worth a lot but I'm keen to learn how to repair and would appreciate some help with my train of thought. The protection circuit is kicking in and the standby light is blinking. It goes into protection mode within a second of powering it on.
So far the relay on the power board that enables the main transformer clicks on and then off when powering on the unit. Looking at the schematics, the permanently enabled power rail called 'unreg sub' provides about 13.5VDC. Where the power comes into the main board on connector CN303, there is a diode...-
Channel: Troubleshooting Audio Equipment
02-11-2025, 05:05 PM -
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by cheeky2For anyone interested just repaired this Sony Main board TV that had a 2 blink error code, the chassis is a RB2G which is common to quite a few different Sony models. The Ceramic 10uF 25V X7R 1206 capacitor C9114 was shorted which took the smd 2A 0603 fuse out F9101. This was powering the Buck converter TPS54332 which caused no 5V output from it.
See the attached picture of the locations of both components. I also attach the best service manual I found for this board for anyone else in a similar position of trying to repair this main board. It's not specific to the TV model however it gives...01-08-2024, 05:56 AM -
by brithepi2kMy Samsung UE75TU7020k lights up fine when one of the ribbon cables are disconnected from the main board, lights stay on but not getting half a picture, I do the same with the other ribbon and put the other one in and lights stay on but not getting half a picture. The standby light flashes 2 times then reboots then it then tries to come back on again and just keeps looping until I take either one of the ribbon tables out (doesn’t matter which one I take out it stays lit when either one is out). I’ve tested the backlights but all working with none shorting out, I’ve replaced the main board...2 Photos
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