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Topics - morganp3205

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Magnificent Magnavox / Model 1SB115F
« on: April 13, 2019, 05:05:20 PM »
I'm trying to identify a 1960s console stereo. There are no manufacturers name anywhere just a label inside that says Model 1sb115F and RETMA232

I need some help identifying and finding technical information for what I believe is a 1950's consolette record player with a Collaro High Fidelity RC54 record changer.  The only number stamped on the cabinet are 692473-2 and 37-amc-33. On the tube diagram is 590838. Thanks for your help.

Wanted / Service manual for RCA Victrola model 4vf206
« on: August 17, 2018, 09:45:35 AM »
I found on online but it was already sold. The cover says it is for 4VF0 4VF1 4VF2 series Service Manual.



Zenith / Zenith SFF2535R low left channel
« on: June 28, 2017, 07:16:57 PM »
Hi All

I'm new to vintage stereo repair although not vintage stereos except they weren't vintage when I was using them. :) Recently my wife bought me beautiful vintage stereo and I have been working to bring it back to it's original sound quality. I have read many forums and threads in preparation for this project. At this point, I've got if fully operational but with a few issues.

I began with replacing all the electrolytic capacitors, cleaned all the switches and pots and replaced the channel AF amp tubes and the left and right output tubes.

I get good volume from the right channel although a little distorted at the high end and low volume with a lot of distortion on the left channel.

Another more minor issue is that I don't get any sound from the mid-range or tweeters on either channel. I replaced the caps on them with the specified non-polarized replacement. I have bypassed the caps to make sure the speakers are good and have even tried driving them from a different amp source.

I was a technician for a short time 40 years ago but my profession took off in another direction. Now that I'm retired I back to where I started. Only trouble is, I don't know where to start trouble shooting this. I have the SAMs for the system and can still read the schematic. I just don't know what to look for or where. Any help would be appreciated.


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