Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Model 90 Stuck At One Volume Level
#5

Yeah morzh I drilled that rivet out during the resto because it looked a little corroded. I reused the ground strap, it's good but I replaced the rivet with a small screw, lockwasher and nut. My lead resistance is .1 ohms and the volume ground reads .1 ohms.

It's late here so I enlarged two more copies of the schematic to 11X17 and in the morning I'm gonna go through the whole circuit and highlight each section as I go. This will be the third time. If I'm missing something I must be blind. I can ground the grid on the Det. Amp. and I still have volume. So I still have an audio signal going into the 1st AF from somewhere.

Appreciate the help from all of you! Let you know what I do or don't find.

Pepper

"It's Nice To Be Nice To The Nice"
Major Frank Burns Mash 4077th


Messages In This Thread
Model 90 Stuck At One Volume Level - by Pepperoni - 04-12-2012, 04:54 PM
RE: Model 90 Stuck At One Volume Level - by morzh - 04-12-2012, 10:19 PM
RE: Model 90 Stuck At One Volume Level - by Pepperoni - 04-12-2012, 10:44 PM
RE: Model 90 Stuck At One Volume Level - by morzh - 04-14-2012, 03:44 PM
RE: Model 90 Stuck At One Volume Level - by morzh - 04-14-2012, 03:52 PM
RE: Model 90 Stuck At One Volume Level - by morzh - 04-14-2012, 07:16 PM
RE: Model 90 Stuck At One Volume Level - by morzh - 04-14-2012, 09:51 PM
RE: Model 90 Stuck At One Volume Level - by morzh - 04-15-2012, 01:04 PM
RE: Model 90 Stuck At One Volume Level - by morzh - 04-15-2012, 02:26 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Need to purchase some accessories for restoration of my Old Philco Radio
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM
First Radio restoration
Hi Tubeman, Welcome to the Philco Phorum.  Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM
First Radio restoration
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM
Zenith H725
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately. More ...EdHolland — 10:18 AM
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM

[-]
Who's Online
There are currently no members online.

>