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

Loud thump on power up
#2

Well, I am assumingh that the thing plays after the thump and isn't blowing a fuse. If it is a tube radio, it might be something silly as a transformer whose wax or varnish has dried out, but it could be some sort of protective device on a solid state set. Some of the latter used relays to shield the more delicate components from damage if there was a short to the output (i.e. speakers) etc. I'm afraid you will have to be more specific. Tell us more!


Messages In This Thread
Loud thump on power up - by Music in a bottle - 07-05-2009, 10:04 PM
Re: Loud thump on power up - by codefox1 - 07-06-2009, 03:13 PM
Re: Loud thump on power up - by Music in a bottle - 07-06-2009, 04:12 PM
Re: Loud thump on power up - by Ron Ramirez - 07-06-2009, 05:44 PM
Re: Loud thump on power up - by Music in a bottle - 07-07-2009, 05:35 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Jackson 715 not working
Now that you posted the schematic, I don't know why that Sprague electrolytic cap is across the meter, as it is not indi...MrFixr55 — 05:51 PM
HiFi (Chifi) tube amp build - but my own design.
What may be lacking in the PP Tube amps may be the 2nd harmonics, which some, especially RCA back in the day called &quo...MrFixr55 — 05:32 PM
Jackson 715 not working
Usually in an emission tester, the tube under test is measured as if it were a diode. So, some testers connect all the g...RodB — 04:17 PM
Restoring Philco 37-604C
Yep. F5 is green, D5 is Red. Red is Bad. Green is Clean.morzh — 01:30 PM
Jackson 715 not working
I did start to do that but I stalled out because I could not figure out how the grid and plate get voltage. In this diag...daveone23 — 11:52 AM
Restoring Philco 37-604C
(Insert Homer Simpson "DOPF" Here.) When all fails, look at the can. Took the Ron Ramirez advice, red Caig D...MrFixr55 — 09:23 AM
Philco 91 Speaker Replacement
From your text I am not sure if you intend to use the existing speaker with a resistor instead of the field coil. It wo...morzh — 08:44 AM
Philco 91 Speaker Replacement
My field coil is bad. I am still hoping to find an original, but if I can't I will go with a fitting Philco speaker, 125...dconant — 08:34 AM
Philco 91 Speaker Replacement
As Rod said, it is OK to use a fitting speaker, and then look for an original one. If you buy a Hammond 125 output tr...morzh — 08:15 AM
Philco 91 Speaker Replacement
Yes, I often have to substitute, then keep an eye out for an original. In the meantime, the radio is working and being e...RodB — 08:02 AM

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

>