04-10-2013, 08:37 AM
We used to make up similar to what David posted when I was a TV tech, potential live chassis TV's were the norm then, inevitably they would end up in a draw being unused once the novelty had worn off.
To be honest I have always been perplexed why so many folks go for capacitor leakage/ESR meters in the context of valve vintage radio/TV repairs, snip the earthy end of the cap with the set on and stick an AVO on it, job done, if it's an electrolytic that's bulging, oozing or whatever then just replace it, if you suspect it's lost it's value then just bridge it freehand, if normal service is then resumed then replace it.
In the workshops I worked in there was only three kinds of homebrew gizzmo's that were ever used, one was a signal injector (multivib) used when another tech had hoarded the bench signal generator, another gizzmo was a home made tube bopper, the other was an instability probe which was good with the old high gain Murphy TV's.
Lawrence.
To be honest I have always been perplexed why so many folks go for capacitor leakage/ESR meters in the context of valve vintage radio/TV repairs, snip the earthy end of the cap with the set on and stick an AVO on it, job done, if it's an electrolytic that's bulging, oozing or whatever then just replace it, if you suspect it's lost it's value then just bridge it freehand, if normal service is then resumed then replace it.
In the workshops I worked in there was only three kinds of homebrew gizzmo's that were ever used, one was a signal injector (multivib) used when another tech had hoarded the bench signal generator, another gizzmo was a home made tube bopper, the other was an instability probe which was good with the old high gain Murphy TV's.
Lawrence.
