Re: Help with Sony KDL-46XBR4

Thanks for that. I actually came across those steps as well. I did change the model_info to correct size but I didn't see a place to change the actual model/serial# (Original: KDL-46XBR4 with 800xxxx serial# & After replacing FB1: KDL-46XBR5 with 821xxxx in the support info). I was hoping I could change these in the service menu like you mentioned but haven't been able to find a place to correct it.

I still have no picture for digital inputs (HDMI/component) so may be I'll put the original AU board back in to see if FB1 board was...

Hello,
I had an issue with my XBR4 with no backlight and intermittent picture/sound outage. Narrowed the issue down to no 3.3v backlight trigger from AU board. Ended up replacing AU board and FB1 board to get the trigger. Now, I get the backlight and the menu but still no picture or sound. I know I have to update the serial/model of the unit but I'm unable to figure out how to change this. I've already tried service menu but don't see a place when I can change this. Could somebody help with this?

I did notice after replacing AU & FB1 boards, the serial/model is different...

My Sony Bravia doesn't show any picture or sound with power LED staying green and Sony logo lit. When opened the back to clean, noticed no glow on backlights. No capacitors look bulged or burnt and there is normal relay click. Odd thing is, I don't get any blinks (Red) on standby light indicating error. FB1 has heartbeat so I thought TCON might be an issue but since I have no glow, I'm thinking driver board (DF2&3) or the inverter boards. Worst case bad panel. I've checked standby voltage along with 12v/6v references on DF2&3 and all look normal. I did notice no 3.3v inverter trigger on...

Re: New Members - please post your introductions here

Excellent resource on this website. Just what I need to troubleshot issue with my 10 yr old Sony TV.