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

Gotta' Watch Those Repair Guys
#5

Sometimes you have to both wonder how the sets worked when they came back, and also be glad for the education that all the troubleshooting provides.

My great-uncle had a late fourties Crosley-Mohawk (CDN) table top set in his spare bedroom for guests. When I inherited it I set about getting it rebuilt and found that it wouldn't work at all. (I always troubleshoot first and recap later). All the B+ voltages were screwy and ultimately I found that a wire was just plain missing, that wire being the one that tied the B- buss to the negative side of the PS circuit. To find it I had to trace every single wire and every single part in the set to find out what was missing, and that was only after I gave up testing voltages, and scoping signals and not getting anywhere. Once I installed that tiny little bit of wire that set sprang to life as if by magic!! I lost a lot of my hair to that set .... pure frustration! I always wondered how my uncle got that set back from the shop .....


Messages In This Thread
Gotta' Watch Those Repair Guys - by Phlogiston - 03-05-2017, 02:17 PM
RE: Gotta' Watch Those Repair Guys - by Arran - 03-06-2017, 04:37 AM
RE: Gotta' Watch Those Repair Guys - by morzh - 03-06-2017, 09:05 AM
RE: Gotta' Watch Those Repair Guys - by John Bartley - 03-06-2017, 09:48 AM
RE: Gotta' Watch Those Repair Guys - by gregb - 03-06-2017, 10:08 AM
RE: Gotta' Watch Those Repair Guys - by morzh - 03-06-2017, 10:34 AM
RE: Gotta' Watch Those Repair Guys - by gregb - 03-06-2017, 11:48 AM
RE: Gotta' Watch Those Repair Guys - by morzh - 03-06-2017, 12:44 PM
RE: Gotta' Watch Those Repair Guys - by gregb - 03-06-2017, 06:03 PM
RE: Gotta' Watch Those Repair Guys - by TV MAN - 03-09-2017, 11:44 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Zenith H725
I completed the insulation on the cabinet interior (Al foil and hi temp silicone rubber), and reglued the speaker gasket...EdHolland — 06:18 PM
HiFi (Chifi) tube amp build - but my own design.
Tim - Photos of 8 octal tube sockets. (Top and bottom) Send me a PM if you're interested.RodB — 04:11 PM
VTVM meter moves when my hand is next to it & not on
Haha! I hope so. It seemed rather lost and forgotten languishing in the frozen Northeast of England.EdHolland — 02:36 PM
VTVM meter moves when my hand is next to it & not on
Ed - it's in the Cayman's enjoying the good life.RodB — 02:14 PM
VTVM meter moves when my hand is next to it & not on
Static electricity - but the other chaps beat me to it again. I've seen this before with analogue meters. I've also ...EdHolland — 01:56 PM
Need to purchase some accessories for restoration of my Old Philco Radio
Hi Paulo, Welcome to the Philco Phorum. I can see why you want to find good reproduction parts. That is a bea...MrFixr55 — 11:10 PM
HiFi (Chifi) tube amp build - but my own design.
Tim, I have some bakelite sockets in my work shop that I can dig up. I believe quite a few are NOS. I will take photo...RodB — 10:03 PM
Philco 610B oscillator wiring
> The cathode as noted is wired directly to the ground side of the heater filament for that tube, not to the #17 and ...Radioroslyn — 08:12 PM
HiFi (Chifi) tube amp build - but my own design.
Tim; I noticed your post a little late, but I would take one of the junk sockets and try to break a chunk out of it wi...Arran — 08:07 PM
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

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

>