Need some help on an 8TS30....

[Kevin Kuehn]

Originally Posted by Kamakiri

What DOES worry me is that the resistor network in the back cover is getting hot. I mean HOT. As in, I was watching the set, and I *believe* the solder on one of the resistors just melted off and POP.....the resistor dropped from the wire and I lost picture.

Here's where I'd start. Sams chose not to list any voltages in the power supply area, so here's Riders references for those chimney mounted resistors.

Keep in mind that those resistors with negative voltages listed are in series with the 5U4's center tap winding going to ground. Every circuit that gets B+ is drawing current through them, but in a negative direction- the higher the B+ load, the more negative those voltages will be. It's not shown in the pictorial, but there should be something in the neighborhood of neg 55v on the left terminal of R185A.