Philco 37-84--no sound

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Philco 37-84--no sound

codefox1
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Posts: 2,128
Threads: 18
Joined: Oct 2008
City: Merrick, Long Island, NY

#12

04-18-2012, 08:40 PM

(04-16-2012, 09:31 PM)7estatdef Wrote:
(04-16-2012, 05:32 PM)sjhs1962 Wrote: Riders shows a plate voltage of 40 Vdc on the plate of 2nd detector 1st audio. Is this correct? My radio is showing a 230 Vdc???
I've got a better question. How come you have 230v when you should have 40v??? Is the cathode open? Filament good? Tube doesn't seem to be conducting.
Terry

Most old radios were tested with voltmeters that had 1000 or 2000 ohms/volt sensitivity. Look at the circuit. Modern digital meters and VTVM's have virtually no load at all on the circuit being measured.

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Messages In This Thread

Philco 37-84--no sound - by sjhs1962 - 04-08-2012, 04:50 PM

RE: Philco 37-84--no sound - by 7estatdef - 04-08-2012, 10:43 PM

RE: Philco 37-84--no sound - by sjhs1962 - 04-09-2012, 10:40 AM

RE: Philco 37-84--no sound - by 7estatdef - 04-09-2012, 01:47 PM

RE: Philco 37-84--no sound - by sjhs1962 - 04-16-2012, 05:32 PM

RE: Philco 37-84--no sound - by 7estatdef - 04-16-2012, 09:31 PM

RE: Philco 37-84--no sound - by sjhs1962 - 04-17-2012, 02:38 PM

RE: Philco 37-84--no sound - by codefox1 - 04-18-2012, 08:40 PM

RE: Philco 37-84--no sound - by morzh - 04-16-2012, 06:09 PM

RE: Philco 37-84--no sound - by 7estatdef - 04-18-2012, 08:36 AM

RE: Philco 37-84--no sound - by sjhs1962 - 04-18-2012, 02:11 PM

RE: Philco 37-84--no sound - by 7estatdef - 04-18-2012, 05:34 PM

RE: Philco 37-84--no sound - by 7estatdef - 04-19-2012, 04:49 PM

RE: Philco 37-84--no sound - by sjhs1962 - 04-21-2012, 01:18 PM

RE: Philco 37-84--no sound - by 7estatdef - 04-22-2012, 07:56 PM

RE: Philco 37-84--no sound - by sjhs1962 - 05-08-2012, 10:45 AM

RE: Philco 37-84--no sound - by codefox1 - 05-08-2012, 11:15 AM

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