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1934 Philco Model 84B restore on YouTube
11-01-2021, 03:17 PM
Hi All:
 I have a new series on YouTube restoring a 1934 Philco 84B. link below to anyone interested.  https://www.youtube.com/watch?v=JGaZh0Ce...l=Buzz1151 
11-01-2021, 06:50 PM
Hi Buzz,
A few things I noticed. Behind the tuning knob there should be a cardboard pointer it's missing. This is what it looks like http://www.renovatedradios.com/product.php?product=255 When measuring the resistance of the filament winding all of the tubes and pilot lamps must be removed from that circuit. If not you are measuring the resistance of the tube's filament resistance along with the transformer's. This is just a preference issue but you may find it easier to measure the opt by measuring the resistance between pins 2 and 3 of the 42. Those are the plate and screen grid. The fc can be measured from the screen grid of the 42 to the + side of the 1st filter cap or one of the filament pin on the 80 tube. This way you won't have to snip any wires and you could do it with out even flipping over the chassis. To check the pri of the ant coil unplug the set from the wall. Turn the set on and volume full up. Measure the resistance from the ant post to the gnd post. Should see a low resistance. With the volume control in the off position you could measure a low resistance from the control and not the coil as they are in parallel. To get rid of the squeal loosen the trimmer with the fiber nut abt a 1/4 turn. It's below 77 tube at the back corner. Be careful those fiber nuts are somewhat fragile. The 80 and 84's are a little different animal from your standard 5 tube superhet. When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
11-02-2021, 04:02 PM
Tnx!!
When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
11-02-2021, 04:32 PM
Hi Buzz,
Here are a few other bits to make your restoration more complete: Philco 84 (Code 121) Chassis Label – Philco Library (philcoradio.com) Goes to the right of the hole for the line cord. Philco 84 Instructions – Philco Library (philcoradio.com) Printed on one sheet and folded in half. Philco ‘Adjust this screw…” Label – Philco Library (philcoradio.com) Goes above the trimmer with the fiber nut (sensitivity adjustment). When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
11-13-2021, 08:17 AM
Buzz
I bought one of these just yesterday, it is the other cabinet style maybe 84B same chassis. So I will be watching with great interest. Jim Spring Lake MI
11-19-2021, 08:44 PM
Hello All:
Part 2 is now uploaded link below to anyone interested https://www.youtube.com/watch?v=8sgDfzjJ...l=Buzz1151
12-17-2021, 08:54 PM
Hello All:
The Part 3 Final of my Philco Model 84 series is now uploaded. link below to anyone interested https://www.youtube.com/watch?v=JtWgjKHV...l=Buzz1151
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