Regarding this 5 watt power resistor in the bias scheme. How long does it take to get hot?
And while you are testing this and keying it up has your balancing resistor in the output combiner (Near the relay) burned up yet? Doesn't take long.
And you said the resistors associated with the bias and your 10 ohm base resistors have been replaced?
Including the 1.6 or 1.8 ohm resistors by the input transformers?
Also, did you replace all 4 of these finals or just 2 of them?
And what prey tell did you use for replacements?
hfe matched HG transistors or "Toshiba" 2879s from ebay or maybe even legit shibas?
Good internal pics of the amp would help.
The very hot and cold power resistor in the bias scheme is screaming problem problem problem.
And while you are testing this and keying it up has your balancing resistor in the output combiner (Near the relay) burned up yet? Doesn't take long.
And you said the resistors associated with the bias and your 10 ohm base resistors have been replaced?
Including the 1.6 or 1.8 ohm resistors by the input transformers?
Also, did you replace all 4 of these finals or just 2 of them?
And what prey tell did you use for replacements?
hfe matched HG transistors or "Toshiba" 2879s from ebay or maybe even legit shibas?
Good internal pics of the amp would help.
The very hot and cold power resistor in the bias scheme is screaming problem problem problem.