Zenith Model K725

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Zenith Model K725

Elijah
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Posts: 65
Threads: 12
Joined: Dec 2012
City: TN

#18

02-02-2013, 01:46 PM

I'm having one heck of a time trying to get the FM stage aligned. I hook up the VTVM to the proper points according to the instructions, set the signal generator or 10.7mHz, tweak the point(s) indicated first and it just doesn't respond. There' very little if any needle movement.

I've tried with and without a 1 meg resistor in series with the VTVM probe to no avail. I know the VTVM is working as it will measure DC as well as AC voltage and ohms so, it has to be something else. All capacitors have been replaced as have most resistors and I've checked the tubes out with an EICO 625 and replaced a couple that were weak or questionable. I don't' know anything else to do. Any suggestions? These are the instructions I followed...

[Image: http://i180.photobucket.com/albums/x220/...161835.jpg]

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Messages In This Thread

Zenith Model K725 - by Elijah - 01-16-2013, 06:42 PM

RE: Zenith Model K725 - by Glenn Roberts - 01-16-2013, 06:45 PM

RE: Zenith Model K725 - by Elijah - 01-16-2013, 06:48 PM

RE: Zenith Model K725 - by exray - 01-16-2013, 07:32 PM

RE: Zenith Model K725 - by Elijah - 01-16-2013, 07:44 PM

RE: Zenith Model K725 - by Ron Ramirez - 01-17-2013, 07:28 AM

RE: Zenith Model K725 - by Glenn Roberts - 01-17-2013, 07:46 AM

RE: Zenith Model K725 - by Ron Ramirez - 01-17-2013, 08:08 AM

RE: Zenith Model K725 - by Elijah - 01-17-2013, 10:49 AM

RE: Zenith Model K725 - by Glenn Roberts - 01-18-2013, 12:59 PM

RE: Zenith Model K725 - by Elijah - 01-18-2013, 02:20 PM

RE: Zenith Model K725 - by Arran - 01-18-2013, 07:43 PM

RE: Zenith Model K725 - by Elijah - 01-19-2013, 10:54 PM

RE: Zenith Model K725 - by Ron Ramirez - 01-20-2013, 10:05 AM

RE: Zenith Model K725 - by Elijah - 01-21-2013, 04:58 PM

RE: Zenith Model K725 - by Elijah - 01-22-2013, 06:43 PM

RE: Zenith Model K725 - by Elijah - 01-23-2013, 10:23 AM

RE: Zenith Model K725 - by Elijah - 02-02-2013, 01:46 PM

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