14-05-2017, 05:49 PM
No, don't do it! It is totally unnecessary and leads to mistakes and big problems.
Blanket cap changes have wrecked a lot of beautiful sets. Read Chas E Miller's view and comments in the Radiophile magazine. And he has been repairing most of his life.
You will find few or no resistors that are out of spec.
The mica capacitors will be OK. Changing them destroys the alignment.
The waxed tubular paper caps, only if in critical positions, maybe are worth changing, like decoupling and audio coupling caps.
I always change the output valve G1 coupling cap, its the most critical. And the one on the output valve anode.
The cracked plastic Hunts really need changing but I often leave the valve heater caps alone, with 6.3 volts AC on them they rarely give trouble.
I have repaired hundreds of Bush sets from the 50s, they usually need very little work, and I try to maintain their originality as far as possible.
There are seven in the workshop that are run for days at a time and never go wrong.
Blanket cap changes have wrecked a lot of beautiful sets. Read Chas E Miller's view and comments in the Radiophile magazine. And he has been repairing most of his life.
You will find few or no resistors that are out of spec.
The mica capacitors will be OK. Changing them destroys the alignment.
The waxed tubular paper caps, only if in critical positions, maybe are worth changing, like decoupling and audio coupling caps.
I always change the output valve G1 coupling cap, its the most critical. And the one on the output valve anode.
The cracked plastic Hunts really need changing but I often leave the valve heater caps alone, with 6.3 volts AC on them they rarely give trouble.
I have repaired hundreds of Bush sets from the 50s, they usually need very little work, and I try to maintain their originality as far as possible.
There are seven in the workshop that are run for days at a time and never go wrong.
Boater Sam.
