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Philco 37-611 restoration
#1

I picked this radio up a few years and did a quick recap.  Just enough to get it playing.  My recent experience working on a similar 37-640 got me thinking it was time to do a proper job.  That includes replacing the rotting rubber mounts now that I know how to get the RF chassis out Icon_smile

I'm also going to do something about that terrible refinishing job and speaker grille Icon_thumbdown
[Image: https://farm6.staticflickr.com/5058/5399...e3d3_z.jpg]

[Image: https://farm6.staticflickr.com/5297/5400...faed_z.jpg]

[Image: https://farm6.staticflickr.com/5131/5399...70b2_z.jpg]
#2

Here's a look inside. It's an AC/DC set with series wired tube filaments and two bands - SW and broadcast.

[Image: https://farm6.staticflickr.com/5093/5400...2312_z.jpg]

[Image: https://farm6.staticflickr.com/5215/5400...19a3_z.jpg]

Some repairs had been made in the past.
[Image: https://farm6.staticflickr.com/5218/5399...f264_z.jpg]
#3

Here's my quick recap I did back in 2011. It did work, but I wasn't able to get at all the paper caps under the bandswitch and didn't check the resistors.

[Image: https://farm5.staticflickr.com/4087/5409...6a19_z.jpg]

I also had some trouble with than open power switch. I ended up taking it apart and cleaning the contacts. That did the trick Icon_smile
[Image: https://farm5.staticflickr.com/4102/5415...97de_z.jpg]

[Image: https://farm5.staticflickr.com/4112/5415...88c1_z.jpg]

[Image: https://farm6.staticflickr.com/5260/5414...e91b_z.jpg]
#4

You are lucky that it's a 37-611 rather than a 37-116. It has a few more wires in the RF deck!
Nice work as always.

Terry
#5

True, but a 37-116 has an RF stage this radio lacks ;) Definitely notice less gain than the 37-640.
#6

I pulled the RF chassis out for servicing first.
[Image: https://farm1.staticflickr.com/481/20448...6abc_c.jpg]

Finally, I can get at that paper cap!
[Image: https://farm1.staticflickr.com/302/20286...2b17_c.jpg]

It's an oddball dual cap with a metcal collar being the common terminal.
[Image: https://farm1.staticflickr.com/418/20474...134b_c.jpg]

I also restuffed the electrolytic and repacked the vernier drive bearings.

[Image: https://farm1.staticflickr.com/291/20474...10fb_c.jpg]

[Image: https://farm1.staticflickr.com/535/20474...fbd6_c.jpg]

[Image: https://farm6.staticflickr.com/5667/2066...21af_c.jpg]

[Image: https://farm6.staticflickr.com/5641/2069...691a_c.jpg]

Now on to the rest of the chassis Icon_smile
[Image: https://farm1.staticflickr.com/640/21007...16b2_c.jpg]
#7

Next up, I did a bit of chassis cleaning. The filter chokes had leaked out tar or wax which did a great job protecting the metal Icon_smile

[Image: https://farm6.staticflickr.com/5643/2070...caec_c.jpg]

[Image: https://farm6.staticflickr.com/5676/2050...ed6c_c.jpg]

Then, I finished rebuilding the rest of the caps and put it all back together. It works, but it doesn't have very good gain and there's a lot of background noise. Hoping an alignment will help.

[Image: https://farm6.staticflickr.com/5641/2091...73bb_c.jpg]

[Image: https://farm6.staticflickr.com/5634/2029...4299_c.jpg]

[Image: https://farm6.staticflickr.com/5792/2092...3dec_c.jpg]

[Image: https://farm1.staticflickr.com/695/21102...5c3d_c.jpg]




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