87 USA

This is a table top AM/FM Three tube Hot chassis radio. And it sounds surprisingly robust. It is a hot chassis radio that uses an Autotransformer to get the higher B+ of 210 volts to the ECL82 class A output tube. There is a surprising amount of bass. Let's take a look.....

I had a strange Dim Bulb test. It acted as though there was a short...	...Tapping the chassis cleared, restored and cleared the fault. The I found.....	...this red wire. I think this B+ red wire was intermittently shorting to ground. The mark is where the wire was stuck to the above bare wire that is ground.	AM/FM tuner chassis.	The tone control was frozen. It would not turn. A bit of heat and lube permitted sluggish movement. But still no good.	So it comes out for surgery.
	OK it is open. The tone wiper on left.	No too bad. A good cleaning with denatured alcohol.	There it is. Grease that has turned into some terrible baking experiment.	The control was cleaned with Alcohol. A dab new grease and then reassembled. Works great now!	Replacing the selenium with silicon. A 1N4007 and a 68ohm dropping resistor.
As received.	As received.	As received.		First buffed side. 1) Brasso 2) #3 Novus 3) #2 Novus and 4) #1 Novus.	I started with a test on the bottom in that "inconspicuous" area.
	After a little more than an hour the deep scratches although less noticeable are still there.	So as not to remove too much material I stopped here.		Shown on the "Burn-in" shelf.