Data file for ic505
-
-
Re: 50PA4500 - Stuck in Standby MainBoard Fault - IC505
Mainboard: Eax64696604
ic505: W25q80bv -
Re: 50PA4500 - Stuck in Standby MainBoard Fault - IC505
This should resolve common fault on this tv whereby the tv is unresponsive to the remote with standby light on.
note: if the standby light is off, this will not fix the TV.
Please ensure you have troubleshooted the TV ensuring the mainboard is at fault. (ran test patterns etc)Comment
-
Re: 50PA4500 - Stuck in Standby MainBoard Fault - IC505
Hamie;
thanks for the information, but i do have a question about that IC chip.. Does the chip have to be program if i buy it new?Comment
-
Re: 50PA4500 - Stuck in Standby MainBoard Fault - IC505
Yes the file is in my first post. Upload it to your programmer and transfer it to the blank chip.Comment
-
Re: 50PA4500 - Stuck in Standby MainBoard Fault - IC505
i've never done that before.. Can you recommend a good ic programmer?Comment
-
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,... -
Hi All,
Need help.
I have a samsung un60j620dafxza led tv. When I plug it in it has no display, no sounds, and no standby lights.
So I opened the tv and disconnected the power to the mainboard and the backlight powered up. This according to many people says that this is a mainboard
problem. I checked the voltage coming from the stb and I read 1.3 volts on pins 1,3,5 and 7 which are low volts instead of 13 volts which i think the lcd panel
might be drawing too much power from the power supply that it prevents the right voltage going to the mainboard.... -
This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.
Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today.... -
Hi
I have a QN65QN90A which was purchased around launch I guess making it about 1.5-2 years old... had been working fine until a few days ago, simply went black and would no longer turn on (at all). No standby light and no typical PSU relay click etc. Absolutely dead.
Pulled it apart without doing much research first, suspecting the power supply as it had a faint buzz (I guess due to the forthcoming found short), investigated PSU for some time and concluded there was no fault that I could spot with the board removed.
Came to learn after a bit more research... -
I have this LG 42LG3000 Tv which operates on all inputs without any issues whatsoever. However when you try to turn the Tv off the screen goes blank as it would normally however it then turns itself back on again!
So far I have replaced the main board without any resolution to the problem.
When the inverters master and slave VIT71053.54 VIT71053.55 are disconnected from the power supply then the TV will turn off as it should (obviously without any ccfl output).
I have read through a few posts for this model without anyone having this issue as far as I can tell.
I...
Comment