Post by Ken G.Why do you need a schematic ? is there parts missing , burned or missing
numbers ?
What does it do when you plug it in and turn it on ?
If its all there and nothing is missing or burned it probably needs some
capacitors and cleaning .
The tone is rather bland. Not much bass for a Magnavox. There are
some composite components (resistors and caps all in one little
postage stamp-sized element) and I don't know what values are
contained inside. I'm also not 100% certain which sections are
strictly for the amplifier. There are also some components (mounted
on PC boards - ugh!) that I'm not familiar with. If I had the
schematic, I can probably replace them with more conventional parts if
I knew what they were. I can make out the regular paper caps there
and the resistors, but I'd like to know what the other components on
that board are before I start replacing them, so I can do them all at
once. I've already replaced all the piece-to-piece components, except
for the main electrolytic caps in the can. They are an unusually high
value: 1,000 mfd and 500 mfd. Not sure where to find those. They
seem to be fine for now, so I'll just leave them alone.
Just replacing the components I had on hand brought the left channel
back to life, as it didn't play at all when I first bought the console
for $1.29. I'm hoping I can get a little better tone from it before I
give it to a friend of mine.
I previously had purchased one of these consoles that was a few years
newer, but had a mostly plastic and particle board cabinet. Paid
$12.50 for that one and parted it out on eBay, clearing about $70
profit on the amp and turntable. That one had pretty good tone - much
better than this one which is just three years older - and more like I
expected from a Magnavox. Great bass, although the high frequencies
had a bit of fuzzy distortion that seems typical of most solid-state
units from that era.
I have a feeling that the tone problem in the $1.29 console may be
with the output transformers not having a low enough frequency
response. However, it's cheaper to try replacing the resistors and
caps first before replacing the output transformers and hear how it
sounds then. Might even be the non-polarized electrolyitics in the
crossovers, but they're a little harder to find and/or make because
they're odd values like 8 mfd. I don't want to dump a ton of money
into it, since I'm giving it away, but if I can, i'll try and squeeze
some better bass out of it.
Gerry