JVC 56P575 no power

[kf4rca]

I would look for a terminal on the PS board that says 5VSBY and see if you have it.
Also remove the PS board (might be difficult) and inspect all the connections. Does the board look like its been hot? Then check for bad caps.
Have you looked around (on this here web) for a pdf schematic?

[pac.attack76]

Originally Posted by kf4rca

I would look for a terminal on the PS board that says 5VSBY and see if you have it.
Also remove the PS board (might be difficult) and inspect all the connections. Does the board look like its been hot? Then check for bad caps.
Have you looked around (on this here web) for a pdf schematic?

No sign of overheating. Actually very clean. No bulging caps. Cant find the 5VSBY. Nothing out of the ordinary. I'm lost

[kf4rca]

Put the PS board back in, turn it on, and probe around with a DVM to see if you have ANY voltages on it.
Be careful cause an inadvertant short can send the whole thing up in smoke.
Might be conv board but you would most likely get a distorted picture first.
I'd also sniff around for any unusual burnt smell.

[rca2000]

Get a couple of GOOD pictures of the boards...good enough for me to be able to follow things and I will try and tell you what to look for .

[pac.attack76]

Originally Posted by rca2000

Get a couple of GOOD pictures of the boards...good enough for me to be able to follow things and I will try and tell you what to look for .

Will do. Just gonna take me awhile.

[kf4rca]

Whats the power LED doing? Is it on, off, or blinking (count the blinks).
It could actually be working. Try feeding an external audio signal into it. Do you get sound on the speakers?
A possibility exists that the CRT is in "protect" due to scan failure (either H or V).
My guess is the vertical has died. Pull the deflection board and sniff for burnt smell. The vertical chip might have a TDAxxxx number on it. I always thought they had inadequate heat sinking on these.

[pac.attack76]

Originally Posted by kf4rca

Whats the power LED doing? Is it on, off, or blinking (count the blinks).
It could actually be working. Try feeding an external audio signal into it. Do you get sound on the speakers?
A possibility exists that the CRT is in "protect" due to scan failure (either H or V).
My guess is the vertical has died. Pull the deflection board and sniff for burnt smell. The vertical chip might have a TDAxxxx number on it. I always thought they had inadequate heat sinking on these.

No led, no sounds. Its as if it was not even plugged in. I dont even know where the led is on this set.