10-08-2015, 03:24 PM
Well, I wasn't feeling very well this morning (or yesterday) so I stayed home today.
The resistors I ordered from Mouser to replace the two Candohms in the 37-670 arrived yesterday. So this afternoon, I decided that some time at the workbench - in moderation - might be good therapy.
After some drilling and grinding, the rivets holding the Candohms were removed. Some unsoldering followed, after which the Candohms themselves were removed and tossed into the round file.
Following some more drilling and soldering, here's how things looked underneath:
[Image: http://www.philcoradio.com/images/phorum..._00001.jpg]
The power-up test followed.
Voila, no more snap, crackle, pop or sizzle...
[Image: http://www.philcoradio.com/images/phorum..._00002.jpg]
That 5600 ohm 10 watt ceramic resistor really gets hot! I think I will replace it later with a 25 watt cylindrical ceramic, or a 50 watt chassis mount unit. But for the time being, I can declare this one "good enough" and can move on to the 38-250EZ.
(This 37-670 is mine, so I can worry about making it more "perfect" later on. At least now I know it works without the sizzling, and I know the power transformer is OK. Whew!)
The resistors I ordered from Mouser to replace the two Candohms in the 37-670 arrived yesterday. So this afternoon, I decided that some time at the workbench - in moderation - might be good therapy.
After some drilling and grinding, the rivets holding the Candohms were removed. Some unsoldering followed, after which the Candohms themselves were removed and tossed into the round file.
Following some more drilling and soldering, here's how things looked underneath:
[Image: http://www.philcoradio.com/images/phorum..._00001.jpg]
The power-up test followed.
Voila, no more snap, crackle, pop or sizzle...
[Image: http://www.philcoradio.com/images/phorum..._00002.jpg]
That 5600 ohm 10 watt ceramic resistor really gets hot! I think I will replace it later with a 25 watt cylindrical ceramic, or a 50 watt chassis mount unit. But for the time being, I can declare this one "good enough" and can move on to the 38-250EZ.
(This 37-670 is mine, so I can worry about making it more "perfect" later on. At least now I know it works without the sizzling, and I know the power transformer is OK. Whew!)
--
Ron Ramirez
Ferdinand IN
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