magnavox t80908 problem

[radiotvnut]

If the circuit breaker is tripped and trips again when you reset it, I'd first check the four-lead safety capacitor (these were very high failure items). You'll probably have a hard time finding one; but, you can replace it with a some high voltage orange drop capacitors wired in parallel to get the correct value. If the cap is not shorted, other possible suspects are the horizontal output transistor, the regulator transistor, and HV tripler (some of these used an IHVT, instead of a separate fly and tripler).

If the circuit breaker is not tripped, you need to make sure that the relay on the control module is closing. If it's not closing, no power will get to the TV chassis. Sometimes, these relays will get stuck in either the open or closed position.

If the relay is good and power is getting to the main chassis, the "dead" condition is likely due to either a power supply regulator issue or a dead horizontal oscillator or horizontal driver stage.

Regardless of what's wrong with this set, you'll still need to take the time to resolder anything that plugs in on the sweep/power supply side of the chassis. Heck, you might need to resolder every module plug and it's associated chassis connector.

Once you fix those problems, you'll have a decent set that should last a long time.