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Philco 37-84
1/15/2007 12:58:03 PMDonald
I have recaped this radio and replaced all resisters out of spec's. I have not aligned it yet. It plays and only pick up a couple stations. It seems to take a long time to warmup. Once warmed up it sounds fair if you keep the volume down if you get the volume a little to high it gets real distorted and sometimes the speaker starts vibtrate very rapidly and you have to turn the volume down low to get it to stop. All the tubes test good, the output tube test on the line between good and ? on a Eico 625. Does anybody have any ideas?
1/15/2007 1:26:56 PMMark
:I have recaped this radio and replaced all resisters out of spec's. I have not aligned it yet. It plays and only pick up a couple stations. It seems to take a long time to warmup. Once warmed up it sounds fair if you keep the volume down if you get the volume a little to high it gets real distorted and sometimes the speaker starts vibtrate very rapidly and you have to turn the volume down low to get it to stop. All the tubes test good, the output tube test on the line between good and ? on a Eico 625. Does anybody have any ideas?
HI Donald
As far as the radio only picking up a couple of stations, I would think an alignment including the oscillator will solve that problem, as far as the speaker distortion at higher volume levels, I would suspect the speaker might have some damage to it, have you inspected the physical appearance of the speaker, any rips, if not it still could be bad the voice coil itself can cause this symptom, hope this helps.
Mark
1/15/2007 2:30:08 PMGreg Bilodeau
Do you have a spare 6F6 to try? Sounds like the output tube could be a little on the weak side also check the voltages on the 6F6, all of your audio gain is in that one stage and if its not working 100% you could have distortion problems.
Greg


::I have recaped this radio and replaced all resisters out of spec's. I have not aligned it yet. It plays and only pick up a couple stations. It seems to take a long time to warmup. Once warmed up it sounds fair if you keep the volume down if you get the volume a little to high it gets real distorted and sometimes the speaker starts vibtrate very rapidly and you have to turn the volume down low to get it to stop. All the tubes test good, the output tube test on the line between good and ? on a Eico 625. Does anybody have any ideas?
:HI Donald
: As far as the radio only picking up a couple of stations, I would think an alignment including the oscillator will solve that problem, as far as the speaker distortion at higher volume levels, I would suspect the speaker might have some damage to it, have you inspected the physical appearance of the speaker, any rips, if not it still could be bad the voice coil itself can cause this symptom, hope this helps.
:Mark



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