23, 2011 8:23 pm
Subject: [Drakelist] L4B power supply fire!
Just as I have heard all the stories of power supplies being destroyed, my L4B
power supply did just that. Turned on the amplifier just like I always have
heard a big bang and looking to find the noise and then saw the fire. Turned
Hi Michael,
Sorry to hear of your problem with the L-4PS burning. To answer your
question, I did the Heathkit Shop L-4PS upgrade to my L-4B just about a year
ago and I highly recommend it. It replaces all of the L-4PS components
except the transformer, breakers and the 50K 50W bleeder resistors. I
Just as I have heard all the stories of power supplies being destroyed, my
L4B power supply did just that. Turned on the amplifier just like I always
have heard a big bang and looking to find the noise and then saw the fire.
Turned off the L4B and removed the 220 volt plug from the wall just in tim
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