Posted by Steve L.

November 25, 2021 - 03:02 pm

My pleasure and your kind words are most appreciated. I agree about the power transistors. Those and the driver substitutes weren't intended to be upgrades (though they are to a certain extent). Bravo for regreasing them; that made a big difference in transistor temperature in my unit.

Posted by Walt N.

November 25, 2021 - 11:22 am

Thank you Steve. This article was a great help. I don't think I'm going to replace the power transistors as mine seem to be fine. However, I know where to go if I ever need to. I DID replace the grease on all of them with the newer compound, so maybe it'll help them live longer.

Posted by Steve L.

November 24, 2021 - 02:48 pm

Hi Walt, I'm very happy to hear of your success; congratulations! And thank you for letting us know. The 3070 really can be a very nice little amplifier. Will be happy to help if anything else comes up.

Posted by Walt N.

November 24, 2021 - 01:28 pm

Phono input is fine as well. It appears I have not screwed anything up yet.

Posted by Waltn N.

November 24, 2021 - 10:55 am

I replaced Q201 in the preamp, replaced the 2 output caps with 4700uF and replaced ALL the electrolytics. I sounds pretty good! The lo cut problem is not there, so I assume it was a bad cap in the preamp. I have not tried the phono input yet.

Posted by Steve L.

November 22, 2021 - 02:08 pm

Very good, Walt. Let us know how it goes!