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!

Posted by Walt N.

November 22, 2021 - 01:54 pm

It appears I have it correct, just wanted to make sure. Thanks for the comments. Getting close to done on the re-cap. Try it soon.

Posted by Steve L.

November 21, 2021 - 03:00 pm

Hi Walt, Yes, the C and B pins on the 2N5089 are swapped relative to those of the 2N3391A. The E pin remains in the same place, relative to the package shape. I take it you would like to have a way to verify the Q201 connections. Near the top of the second page of this article is a picture of the 2N5089 with the pins labeled. I believe Eico has labeled the pins on the silkscreen, so you can match them up. As a further check, the C pin goes to R202, which should be a nearby 4.7K resistor, so you will be able to measure continuity. Let me know if you need further assistance on that.

Posted by Walt N.

November 21, 2021 - 12:13 pm

Replacing Q201. The 2N5089 has a different lead configuration than the original EICO transistor. I want to make sure that I'm not screwing up before I apply power as I have replaced the original because I remember the noise from "back in the day" when I had one of these.