1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Linear Mode
38-8 high voltage problem
codefox1
Silent Key
*****
Posts: 2,128
Threads: 18
Joined: Oct 2008
City: Merrick, Long Island, NY
#2

06-10-2011, 06:15 PM
For a starter, I'd try to measure just how much current is going through the B+ using an old-fangled ammeter. Anything over 50-75 m.a. wouold be suspect. Suba P.M. speaker and see if the audio is clear. I assume you are meauring from B- to point in question, or however the schematic you have says how to do it.
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
38-8 high voltage problem - by jstaf40 - 06-10-2011, 04:07 PM
Re: 38-8 high voltage problem - by codefox1 - 06-10-2011, 06:15 PM
Re: 38-8 high voltage problem - by jstaf40 - 06-21-2011, 04:31 PM
Re: 38-8 high voltage problem - by codefox1 - 06-21-2011, 11:39 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Hi OSanders. another thing about the loop antenna is that it is directional. Try turning the radio in different direct...MrFixr55 — 09:19 PM
Philco 42-345 Restoration/Repair
The 630v caps will do just fine. Physical size increases with capacity values and voltage. You don't have to replace 200...RodB — 09:09 PM
Help with Supreme 599
Good catch. The 589 is a better schematic but i dont understand how the voltage goes thru the meter to adj the line volt...daveone23 — 08:17 PM
1949 Motorola 5A9M
Arron, Yes, I can see the differences in the interior design, but if you compare the schematics, they look very similar...Vlad95 — 06:57 PM
Philco 42-345 Restoration/Repair
I am not sure how the loop antenna supposed to work but think I have figured it out. I had one lead on terminal 1 and go...osanders0311 — 06:56 PM
1949 Motorola 5A9M
Thx Vlad.klondike98 — 06:54 PM
Rogers Majestic R-646
Hi Arran. I continue to disassemble and I see that the interstage transformer is completely beyond repair. It is placed...Vlad95 — 06:50 PM
Philco 42-345 Restoration/Repair
Hello Rod " If you're not using the 0.33 mfd 200 volt ones for this project, they are excellent tweeter crossover ...osanders0311 — 06:25 PM
Rogers Majestic R-646
Vlad; My set had the same faults as yours when it was about 30 years younger, so I think that these components are sus...Arran — 05:11 PM
Philco 42-345 Restoration/Repair
If you're not using the 0.33 mfd 200 volt ones for this project, they are excellent tweeter crossover caps.RodB — 04:56 PM

[-]
Who's Online
There are currently 354 online users. [Complete List]
» 2 Member(s) | 352 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration