Sony KDL-47V5100

[Malachi]

Picked this tv up for $10. The backlight comes on as seen in the picture but nothing on the screen.
At this point I'm thinking it's a mainboard issue.
If needed I can take readings if you want.

[nomoresonys]

Re: Sony KDL-47V5100

Maybe take the shield off the tcon board and see if you have about 12 volts on each side of the fuse, black probe- on chassis ground, red probe+ on each side of fuse.

[Malachi]

Re: Sony KDL-47V5100

Maybe take the shield off the tcon board and see if you have about 12 volts on each side of the fuse, black probe- on chassis ground, red probe+ on each side of fuse.

Yes, 12v on each side.

[budm]

Re: Sony KDL-47V5100

What happen if you have ribbon cables between T-CON and the LCD panel connected one at a time?
Can we see good clear pictures of the T-CON board?

[Malachi]

Re: Sony KDL-47V5100

T-con.

No change when trying either ribbon disconnected.

[budm]

Re: Sony KDL-47V5100

Try the test in my post #4.

[Malachi]

Re: Sony KDL-47V5100

Sorry. I edited my above post to say that didn’t change anything. Didn’t see you had posted again. Trying to avoid too many posts.

[Malachi]

Re: Sony KDL-47V5100

Typo in the title also. It’s a KDL-46V5100

[nomoresonys]

Re: Sony KDL-47V5100

Do you have a solid green led on the front?

[Malachi]

Re: Sony KDL-47V5100

No, just a solid red standby and amber pic off/timer led.
I also just noticed the backlight turns off after about 15 seconds and then come back on. It repeats that, nit sure if it’s because the shield and heat sinks are off of the t-con.
I will put it back on this afternoon.
Also it doesn’t respond to the side buttons. I have to plug it in and unplug it. I don’t hav the remote.

[Malachi]

Re: Sony KDL-47V5100

Should I toss it?

[budm]

Re: Sony KDL-47V5100

No, just a solid red standby and amber pic off/timer led.
I also just noticed the backlight turns off after about 15 seconds and then come back on. It repeats that, nit sure if it's because the shield and heat sinks are off of the t-con.
I will put it back on this afternoon.
Also it doesn't respond to the side buttons. I have to plug it in and unplug it. I don't hav the remote.

Aha, important info.
What happen if you disconnect HSR board connector?
Service manual:

[Malachi]

Re: Sony KDL-47V5100

Already tried disconnecting the buttons. I’m assuming that’s what HSR board is? No difference.

[budm]

Re: Sony KDL-47V5100

Already tried disconnecting the buttons. I'm assuming that's what HSR board is? No difference.

Nope!
Did you download the service manual to know where HSR board is?
https://www.shopjimmy.com/catalogsea...?q=KDL-46V5100

[Malachi]

Re: Sony KDL-47V5100

Yes I downloaded it. Didn’t see a reference. I did a search fir HSR. I’ll check again.

[budm]

Re: Sony KDL-47V5100

Look at shopjimmy link to see what the HSR look like.

[Malachi]

Re: Sony KDL-47V5100

Found it, no change. Btw, it's different than the one on shopjimmy. Only 1 connector.

[nomoresonys]

Re: Sony KDL-47V5100

Did you try a firmware update? One there says for 46V5100, did not see 47V5100, maybe recheck model number: https://www.sony.com/electronics/sup...loads/W0006532

[Malachi]

Re: Sony KDL-47V5100

Yes I tried a firmware update. Didn’t work. I corrected the model number in post #8. I couldn’t change the title.

[nomoresonys]

Re: Sony KDL-47V5100

Ok, didn't see post 8, what do you get if you have cable from powerboard to mainboard unhooked and plug ac into powerboard? Did you try the update with a different thumb drive? before anyone says it's a sony not a samsung, just don't.