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Old 23rd July 2013, 10:04 PM   #1
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Default RCA PA amp ...

Hi Guys,
I have an old RCA SA752 amp, without much of the schematic... I checked and replaced the out of value resistors, and most of the caps,,, Just taking a shot in the dark here, to see if anyone has a schematic for this guy, or has any experience with it...
Regards,
John

Last edited by knockbill; 23rd July 2013 at 10:15 PM.
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Old 23rd July 2013, 11:41 PM   #2
Enzo is offline Enzo  United States
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If google is no help, sit down with a pad and pencil, and draw up a schematic from the unit. I have done that MANY times over the years. And especially if you already have a partial.
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Old 24th July 2013, 12:17 AM   #3
Jsixis is offline Jsixis  United States
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picture would be nice, Radio Shack had a lot of re badged RCA items
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Old 24th July 2013, 12:22 AM   #4
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I have tried to trace wiring, and add whats missing on the schematic,,, I took teh partial I have to Staples, and had it blown up, so I could add teh missing components.. I'm not very good at it!!! I ended up with a bunch of erasing...
Also, if I could find an original schem, I would know the test voltages, to confirm my progress...
Thanks for your reply, I'll keep at it...
Regards,
John
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Old 24th July 2013, 12:28 AM   #5
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Quote:
Originally Posted by Jsixis View Post
picture would be nice, Radio Shack had a lot of re badged RCA items
OK, here you go....

Regards,
John
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Old 24th July 2013, 06:44 PM   #6
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Nice. I haven't seen plate cap rectifier tubes since my Mother's 1954 Philco TV. Possibly dates from that era, when monaural was was the only channel. I'm sure Howard Sams had a Photofact package on this, but who sells the old ones I don't know.
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Old 24th July 2013, 07:35 PM   #7
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Quote:
Originally Posted by indianajo View Post
Nice. I haven't seen plate cap rectifier tubes since my Mother's 1954 Philco TV. Possibly dates from that era, when monaural was was the only channel. I'm sure Howard Sams had a Photofact package on this, but who sells the old ones I don't know.

Thanks for the reply,,, FYI, the caps are on teh output tubes... I believe this amp is from 1962....

Regards,
John
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Old 24th July 2013, 10:53 PM   #8
Enzo is offline Enzo  United States
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Sam's Photofact is worth a look.
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Old 24th July 2013, 10:55 PM   #9
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Quote:
Originally Posted by Enzo View Post
Sam's Photofact is worth a look.
Thanks, I'll see what I can find...
Regards,
John
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Old 25th July 2013, 12:59 AM   #10
Jsixis is offline Jsixis  United States
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that is way older then I was thinking. If nothing else you have some awesome Iron
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