rca whining noise/no power up

[magmod93]

Originally Posted by radiotvnut

I'll second that the flyback went belly up and took the horizontal output transistor with it. A word of caution. Don't power the set up in it's current state. The power supplies in those won't take a short on the B+ line for long without blowing up. No need to have to rebuild the P/S if you don't have to. Before you do anything, unsolder the HOT and check it for shorts. The HOT is the big black transistor that's mounted to a heatsink behind the flyback. You should be able to get the parts from www.tritronicsinc.com.

That's why I stated to check the power supply diode for the 135V B+ line... the set is whining most likely because it's now shorted. It's in shutdown...I've replaced hundreds of them already... trust me, I know.