Metrodyne 6 schematics needed - Videokarma.org TV - Video

jbivy · #1 04-12-2012, 06:06 PM

So I just picked this up on ebay for a good price, but i cant seem to find the schematics for this particular model. Or what batteries it ran off of.

This will be my earliest restoration and im very excited about it. This will be my first battery eliminator ive ever built. So any tips there would also be appreciated.

EDIT, oops. This is the "super six".

bandersen · #2 04-12-2012, 07:13 PM

Nice score

Did you see this ad on ebay ? http://www.ebay.com/itm/1927-METRODY...-/250451949684

Reece · #3 04-13-2012, 06:15 AM

These things are pretty simple and don't have many components, maybe only two or three fixed caps and a grid leak. I'd be concerned about the green on those coils: were they supposed to be green or is that copper corrosion?

Edit: The schematics for early TRF's are all about the same. Things to check first with your ohmmeter are RF coil and audio transformer continuity, any loose or corroded connections. Sometimes only certain tubes are on the rheostat and the others run full on. I see from other pictures on the web that the coils were originally colored green so maybe only of cosmetic concern.

jbivy · #4 04-13-2012, 07:39 AM

Quote:

Originally Posted by Reece

These things are pretty simple and don't have many components, maybe only two or three fixed caps and a grid leak. I'd be concerned about the green on those coils: were they supposed to be green or is that copper corrosion?

Ive found several pictures of this chassis and yes, the coils are green from the factory. I found out it takes 45, 90 and 105 volts. So ill need to find out how to make a battery eliminator for it, for those. I assume i can just use three transformers that give out the approximate voltages?

But id still like to find a schematic for this, if one exists.

Reece · #5 04-13-2012, 08:04 AM

Sent you a PM.

jbivy · #6 04-25-2012, 09:14 PM

Well it was packed badly. Apparently a bracket broke off one of the tuners, it slammed around the inside of it breaking the other tubes and chipping the other condenser.

So.. i guess ive a nice case with three coils and a variable resistor with a jack. Since the face plate is metal it can be unbolted easily. I figure since ive an old orphan westinghouse super heterodyne chassis laying around, ill put it inside there. Mount the knobs on a custom face plate. Ive some 1/8th inch zebra wood laying around that might look classy as the face plate. Maybe look up if there is anyway to modify that old wr-258 chassis for better performance.