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RE: R&R tubes in Transcendent T8-LN

Posted by LtMandella on January 1, 2020 at 07:35:09:
All fixed! Amp sounds great again.

I replaced the anode caps with ceramic versions.

Replaced 8 EL-509 power tubes with tubes from my "NOS" cache.

Then I decided to take a look on the component side of the board and found 4 leaky 1 mfd 630v caps, so replaced those.

After all above replacements, still not much improvement. Sound was thin and distorted in the lower frequencies.

As a last resort, I decided to check the fuses. The T8-LN has a 1.5 amp fuse for each channel, and a 6 amp power fuse.

Since I always had sound from both channels I never thought to check for an open fuse.

But one of the channel fuses was open. After replacing that fuse, all is good!