Silvertone 8106

[Username1]

I like the Corvair convertible.....

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[Doug66]

I think I have fixed the audio. I started checking voltages, which were way off on the 5AQ5 audio output. R44, 560 ohm 1W going to pin 6 was open. Didn't have a new one, but I tacked in 2 units in series to give me around 570. Sound is much better but not perfect. I think when I get that new coil in, the sound will improve as I adjust it.

[Doug66]

My L15 sound take off coil arrived today, and I have a couple of questions before I install it. The Miller replacement coil 1471-a has a resistor soldered across two lugs and also has two 4.7 caps.

The guy at Moyers, where I bought the coil, emailed me and said that his book said to delete them if my old coil doesn't use them. Therefore I will take out that resistor. However, the old coil uses two 33pf caps which I replaced. Should I keep the 4.7pf caps in the new coil or change them to the 33pf caps?

[Doug66]

After I panicked last night, I sat down an reread the instructions and figured it out, but thanks for the help.

Now I have a new issue. I've got the new yoke installed and did a power up. I have no Hi voltage. Checking voltages on the 6CG7 gives good readings on both plates, pin 6 and 1. I don't have any negative voltages on pins 2, 7, 8.
High voltages probe shows nothing on CRT anode, plate of 12AV5, or pin e of Damper.

[Giulio Maiocco]

Good afternoon Doug,

You are missing your negative voltages because the horizontal oscillator is not working, also, your High voltage is missing because of this!
As a quick check, please control the continuity of the 50 Ohm part of coil L22 and that you obtain about 490Kohm between 6CG7's pin 2 and ground. If these 2 tests do not point to a "smoking gun", I'll suggest you some other tests to perform to help straight out your problem.

I really doubt it is the 6CG7 itself, as it is a reliable tube, but did you try a spare tube?

Cheers

Giulio

[Doug66]

Hey, the tests were way off, so I replaced C47. Still nothing, so I tried another 6CG7 tube. That brought everything back including HV. Didin't think it would be as simple as a tube!

Thanks for the help.
Doug

[Doug66]

When I got this set, the original yoke cover had disintegrated leaving a black powder over the chassis. Also missing was the width sleeve. I found another width sleeve, and I know I need an insulator like fish paper between the sleeve and the yoke.

I just got some fish paper. Do cut the paper the size of the width sleeve and glue them together, or do I encircle the yoke completely with the fish paper?
Thanks