I believe this to be a 650 chassis, which I'd like to confirm or correct if necessary. I've heard others call it a 36-650. Does the "36" refer to year of manufacture?
Also, is the "8-35" on the transformer a date code?
Thank you again, Greg
Thank you Nathan. Is there more info or pictures I could post to confirm?
It looks similar to my untrained eye but I'm not certain if the tubes marked 76, 77, 78 & 80 match up with those in your diagram?
It might be helpful if you could provide a photo of the underside of the chassis.
Another great data point would be the part number printed on the dial.
As far as I can tell that particular power transformer is consistent with model 660 - and I couldn't find any other model that uses it.
Thank you Nathan, I will post that image shortly. Where might I find the dial part number?
Could this be the dial part number? 27-5115
Can't be anything other than a 660...or it could be a 665 (same tube lineup, very little differences between the two).
Amazingly clean. Unusually clean. Wow. I almost never see 1930s Philco chassis that are this clean underneath.
Well that's nice to hear Ron.
Do you happen to know the difference between the 660 and the 665?
I just want to be absolutely certain what I have when I take it in for servicing.
Greg
Offhand...no. Same number of tubes, same tube types, same band coverage.
Any competent repairman will compare the service data between the two, comparing this also against your chassis, and making a final determination.
OK, so the 665 is probably just a revision of the 660.
Am I correct in dating this chassis as a 1935?
I gave the 665 info a quick look and I did see that it has the correct alignment for the bcb. On the 660 there's a misprint and a note correcting the misprint.
If you have nothing but time here's a link to a 660L chassis I serviced a couple of yrs ago.
http://philcoradio.com/phorum/showthread.php?tid=14829