05-28-2020, 08:59 AM
I am looking at a 38-116 for someone and it has been fully recapped and out of tolerance resistors replaced ( not by me but well done, nothing sloppy).
Complaint is ,the volume is low and sounds like a crappy transistor radio. This thing should boom.
I checked the bias voltage at the 6l6 tubes ( pin 5) and they have -25v on them so that is not the issue.
Plate voltages seem a bit high, I attribute that to DMM. ( about 44 volts high on 6l6 plates and screen) .
It also seems like there is lack of tone. every thing is tinny sounding. output xformer check, field coil checked.
speaker subbed to rule out speaker , still sounds like crap.
Supposedly new tubes were put in.
I don't know if an alignment was done.
point my in a direction of what to check next.
Complaint is ,the volume is low and sounds like a crappy transistor radio. This thing should boom.
I checked the bias voltage at the 6l6 tubes ( pin 5) and they have -25v on them so that is not the issue.
Plate voltages seem a bit high, I attribute that to DMM. ( about 44 volts high on 6l6 plates and screen) .
It also seems like there is lack of tone. every thing is tinny sounding. output xformer check, field coil checked.
speaker subbed to rule out speaker , still sounds like crap.
Supposedly new tubes were put in.
I don't know if an alignment was done.
point my in a direction of what to check next.
