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1934 Philco Model 84B restore on YouTube - Printable Version

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1934 Philco Model 84B restore on YouTube - Buzz - 11-01-2021

Hi All: Icon_wave
I have a new series on YouTube restoring a 1934 Philco 84B.
link below to anyone interested. Icon_eek
https://www.youtube.com/watch?v=JGaZh0CeLOg&ab_channel=Buzz1151

RE: 1934 Philco Model 84B restore on YouTube - Radioroslyn - 11-01-2021

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.

RE: 1934 Philco Model 84B restore on YouTube - radiorich - 11-01-2021

Hello Terry,
great advice !

Sincerely Richard

RE: 1934 Philco Model 84B restore on YouTube - Radioroslyn - 11-02-2021

Tnx!!

RE: 1934 Philco Model 84B restore on YouTube - Radioroslyn - 11-02-2021

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).

RE: 1934 Philco Model 84B restore on YouTube - Jimradio - 11-13-2021

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.

RE: 1934 Philco Model 84B restore on YouTube - Buzz - 11-19-2021

Hello All:
Part 2 is now uploaded
link below to anyone interested
https://www.youtube.com/watch?v=8sgDfzjJjAA&ab_channel=Buzz1151

RE: 1934 Philco Model 84B restore on YouTube - Buzz - 12-17-2021

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=JtWgjKHVQ2Y&ab_channel=Buzz1151

RE: 1934 Philco Model 84B restore on YouTube - Jimradio - 12-18-2021

Thank you for this video, should help me restore the one I have.