[R-390] R-390 Meltdown - the Saga Continues

[Rick Popovich]

Hi Chris,

Don't worry - I'm pretty much a novice when it comes to these receivers as
well and I am not taking the information and disappearing.

I was also of the opinion that C325 was the problem and after performing
resistance checks using information given by some folks here I completed the
repair last night.

The results were mixed, now R220 is not burning up but there now seem to be
a problem downstream so to speak. After letting her warm up & switching on
the B+ I knew from the sound that something wasn't right. Shortly there
after a little smoke started to come from somewhere else - this time it was
on the topside of the RF deck and since I was viewing things from the back
side it took a moment for me to notice it. (I'm working with the RF deck
sitting on top of the xtal osc but connected to the rcvr Power lead)

I immediately shut it off and needless to say was a little frustrated so I
just put down my tools & called it a night.

Another potential suspect identified by some of the veterans was T207. Since
it is connected to this circuit and the smoke appeared to be coming from the
topside of the RF deck I'm going to check this part tonight. Some early very
preliminary checks of T207 didn't show any problems - but now I'm thinking
it may also have some issues.

So Chris welcome to my learning curve and check back whenever you like.

Best regards to all.

- Rick