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I had a Dead Samsung UN65MU6300FXZA with Mainboard BN94-12440E
Dead / No Power / No Standby Light results after power company had three
consecutive power outages on/off/on/off/on/off after which TV was rendered unresponsive.
After exploring the issue found Mainboard was the fault. Then with research on this site determined IC1604 was the suspect. The IC1604 is a surface mounted device (SMD) EEPROM, Winbond Model 25Q40CLSIP. A read on this EEPROM came back with all FF FF FF FF FF in all registers blank and empty of data. I had a spare mainboard with intact IC1604 and utilized... -
Hi, I'm hoping someone can point me in the right direction....
I have a S55V14B TV and it suffered a board failure. Main board part number: 222-655036003-30. I couldn't find a board with the exact part number so I've used what looks to be the same board however the part number is slightly different. 222-655036002-30.
After installing the main board the stanby light came back on, however it wont turn on. I spoke to Soniq Australia and managed to get a copy of the firmware but no service manual. They don't have one. I asked about the different part numbers but they... -
I've got a 55" Soniq LED TV which is stuck in standby mode (initiator LED on, but no picture/sound/backlight). It will intermittently start working again for a few days or weeks, but it has been months since the last time it turned on. I've seen a lot of similar issues with Soniq TVs that were fixed by updating the firmware, but I need to turn it on to update the firmware so no luck there.
I've taken the back off and visually inspected it but everything looks fine. No exploded capacitors or signs of overheating etc. All of the 1117 regulators on the main board were outputting... -
No standby red light, nothing
This Sony has a separate AC->DC power adapter supplying 19.5V to the TV power board (JK3)
Disconnected JK3 power board from main board, checked voltages on all the pin outs
At a few pins I can see the power supply providing 19.5V to the main board
Based on the service manual triage.. it seems to be pointing towards the power board (JK3) being the most possible culprit
LED light turns on when I disconnect LED driver board ribbon from mainboard (so i thought it is the mainboard,... -
TV standby light is on but no response to remote or side buttons.
I measure +0.23 on the +5SB pin (8 from top) and +5.2 on PS/ON (9) and nothing on other pins.
There is 323v across the big cap on the hot side.
I included pics of both sides of the PS, main board and of both together.
Any suggestions greatly appreciated...
Working...
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