Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
Okay, mystery cap removed.
http://www.philcoradio.com/tech/images/90a.jpg
Now, since you own a 90 with dual 45 outputs (and I don't), you are saying that your 90 did not have the "mystery" cap in it? I just wanted to confirm that point. It actually made sense to me that there would be a plate bypass cap along the B+ line which feeds the plates of the RF, 1st det. and IF tubes. But if it isn't there, then it shouldn't be on the schematic...
--
Ron Ramirez
Ferdinand IN
Messages In This Thread
RE: 90 restoration - by Ron Ramirez - 12-13-2013, 07:22 PM
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
Philco 42-345 Restoration/Repair
|
Ok MrFixr55,
I have tried the DeoxIT D5 on the band switch and even though it has relieved the tension I felt when turn...osanders0311 — 11:11 AM |
Part numbers to model cross
|
Is there a reference somewhere where you can punch in Philco part numbers and see what models those parts were used in?Jim Dutridge — 10:17 AM |
Philco 42-345 Restoration/Repair
|
Hi OSanders,
Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM |
5U4 vs 5Z4 tubes
|
I think that RCA and GE introduced metal tubes in the USA in 1936. I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM |
Philco 42-345 Restoration/Repair
|
Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
5U4 vs 5Z4 tubes
|
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM |
Philco 42-345 Restoration/Repair
|
Thanks Rod,
"When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM |
Philco 42-345 Restoration/Repair
|
RodB
:beerchug:Vlad95 — 10:22 AM |
Philco 42-345 Restoration/Repair
|
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM |
5U4 vs 5Z4 tubes
|
Well this is a Hallicrafters SX/9 circa 1936.
No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM |
Who's Online
|
There are currently 524 online users. [Complete List] » 1 Member(s) | 523 Guest(s)
|
|
|

|