02-12-2019, 10:07 AM
Ok...thanks for your help jcassity! Anyone else out there with a functioning 47-1230 on their bench that could make this measurement for me?
If I can't find a solution and everything seems to be working ok I'm considering installing a 5W resistor in place of the 15k 2W resistor just to be on the safe side. I took a new measurement and it is better now that I have FM working, but is still dissipating 1.55W when in FM mode, 0.84W in shortwave, and a little less on AM. There are also (2) 0.5W resistors that this circuit feeds that are dissipating a little less than 0.25W so I'm considering replacing those with 1W resistors. I'd really rather not do that if there is actually a problem in the radio but without comparing to a know good radio I don't know for sure.
Rich
If I can't find a solution and everything seems to be working ok I'm considering installing a 5W resistor in place of the 15k 2W resistor just to be on the safe side. I took a new measurement and it is better now that I have FM working, but is still dissipating 1.55W when in FM mode, 0.84W in shortwave, and a little less on AM. There are also (2) 0.5W resistors that this circuit feeds that are dissipating a little less than 0.25W so I'm considering replacing those with 1W resistors. I'd really rather not do that if there is actually a problem in the radio but without comparing to a know good radio I don't know for sure.
Rich