Re: Jonell radio problem.
I have retested heaters with a new battery in DMM and got 5.7V ac this time .With the V3 out I still got 5.7 and the bulbs out.. same.I will retest with ALL valves out soon.
I decided to backtrack and tested the output from the big condensor.Red (reservoir)258 V DC (16MF),Yellow234(16MF),Green170(8MF).Do these seem right?
Next ,I tested the anode voltages .Compared to the figures given in Trader Sheet 1054,they all were ~20 to 40 v down.So were the screen readings.Maybe the electrolytic is tired out and not giving enough volts .Would it still work well on MW with an aerial if this were so?
|