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Philco model 38 code 121 not receiving signal.
#31

It feels good don't it? Good luck on the rest.

Tubetalk1
#32

Thank you sir. Yes I feel good and also relieved because this one's been weighing on me a bit.
#33

I use a pair of Mastercraft brand DMMs from Canadian Tire, from what I read most of those DMMs use the same main chip regardless of the name, it's the peripheral stuff like switches, sockets, test leads, and the case itself that differ, and they can cheapen out on. It's true that they are not as rugged, but I think that the previous two DMMs I bought from Canadian Tire were on sale for under $30, with tax, so if one blows up or breaks it's not a huge loss. Before that I was using a VTVM from EICO, till I blew up one of the resistors.
Regards
Arran
#34

I need to get a vtvm. I think that little component tester is just more accurate. Plus it shows the inductance which is nice. It's like and ohm meter, RCL meter, and a component Identifier all in one. I highly recommend them. The TinySA also.
#35

A DMM is good enough.
One rarely has to measure indictance, but if you do, short of getting a serious LCR meter (I have one, but rarely use it) there are DMMs available with L measurements.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#36

That's true. Of course If I were to get a vtvm I'd probably have to sink money in to it to get it working right. Probably just stay with what I have.
#37

So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original opt from the speaker and noticed from the get-go that my code 123 model 38 has the opt mounted to the chassis. On the 121 chassis it's mounted to the speaker. Where it's mounted on the 123 (1A6 pentagrid tube) is between the converter tube and 19 output amp tube. This is the only spot on my 121 chassis I can mount it, between the 15 and 19. Since the 123 uses a more standard converter circuit I am wandering if the autodyne circuit that the 121 uses would be susceptible to magnetic interference from the opt and that's why they mount it to the speaker. My replacement does not have a mounting for the opt. The only other spot is on the cabinet arch support in the back. What do you think is best?      
Code 121
   
Code 123




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