Philco 620B alignment woes

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

Philco 620B alignment woes

wonderwrench
Member

Posts: 96
Threads: 16
Joined: Oct 2007

06-21-2008, 11:52 AM

More alignment woes. As I suspected who ever worked on this radio had no clue. The alignment was so far off it was a nightmare to perform. Once completed the radio performs much better, not great but good. I did uncover two problems.

First the RF trimmers act strange. It is not possible to peak any one of the three trimmers during the alignment. From tight as I loosen up the trimmer I get a rise at about 1 half turn but never a peak. I ended up leaving all three RF trimmers on the tight side of the excessively wide peak. Possible cause a bad cap in the RF circuit? Your opinions please.

Secondly the radio's AVC curcuit seems to work poorly or not at all. Could be related to the first problem? Your opinions please.

Thanks

Bill

It's not what you don't know that hurts you it's what you know that's not so.

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

Philco 620B alignment woes - by wonderwrench - 06-19-2008, 06:29 PM

[No subject] - by wonderwrench - 06-20-2008, 07:02 PM

[No subject] - by BDM - 06-20-2008, 07:19 PM

[No subject] - by wonderwrench - 06-20-2008, 07:46 PM

[No subject] - by BDM - 06-20-2008, 07:58 PM

[No subject] - by wonderwrench - 06-20-2008, 08:03 PM

[No subject] - by wonderwrench - 06-21-2008, 11:52 AM

[No subject] - by BDM - 06-21-2008, 12:24 PM

[No subject] - by wonderwrench - 06-21-2008, 12:51 PM

[No subject] - by BDM - 06-21-2008, 01:16 PM

[No subject] - by rghines1 - 06-21-2008, 01:33 PM

[No subject] - by BDM - 06-21-2008, 11:56 PM

[No subject] - by wonderwrench - 06-23-2008, 03:26 PM

[No subject] - by wonderwrench - 06-23-2008, 04:03 PM

[No subject] - by etech - 06-23-2008, 06:33 PM

[No subject] - by wonderwrench - 06-29-2008, 06:23 PM

[No subject] - by wonderwrench - 07-06-2008, 12:26 PM

[No subject] - by Ron Ramirez - 07-06-2008, 02:46 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM
philco predicta
Hello, good afternoon, I would like to ask what the possible problem could be if I don't have an image on the screen. I ...cgl18 — 10:19 AM
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM
462ron
It’s on the bottom of the homepage of our Philcoradio.com homepage! Ron462ron — 07:20 AM

Who's Online

There are currently 485 online users. [Complete List]
» 3 Member(s) | 482 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me