That Laney amp was made when Laney used quality components, most were sourced through RS Components in the UK.
I wouldn't mind betting that is you have no signs of bulging at the positive end of the capacitors, you will only lose value by replacing them.
Bring the voltage up slowly, with no valves in place, leave it on whilst monitoring for issues, switch off after an hour, check the capacitors are discharged, replace the valves, plug in a speaker load and you will be amazed.
Nice amplifier.
I have known the 15u bias capacitor go open circuit, that causes hum.
I wouldn't mind betting that is you have no signs of bulging at the positive end of the capacitors, you will only lose value by replacing them.
Bring the voltage up slowly, with no valves in place, leave it on whilst monitoring for issues, switch off after an hour, check the capacitors are discharged, replace the valves, plug in a speaker load and you will be amazed.
Nice amplifier.
I have known the 15u bias capacitor go open circuit, that causes hum.
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