Just bought one of these machines. Will do all of this. Thanks very much!

Wayne, thank you for this tutorial, I'm going to use your part list. Any reason you did not replace all of the transistors?

@waynephillips1848

7 ай бұрын

Hi, the 2sc458 seem to be the only transistor that fails, Look for tell tale black oxidisation on their legs, TR26 and TR25 are FETS.

Hi, good job, I am doing the transistors replacement in my GX 4000. Not doing the capacitors at the moment because I heard the old ones are usually good.. Did you find any to be faulty when you replaced them?

@waynephillips1848

4 ай бұрын

Hi, If you have taken the effort to take the unit apart i would defiantly do the caps, to be honest i never tested the caps i removed, the caps dry out over time, might save you having to do the job twice.

I have the same unit but the right channel doesn't work at all. (Meter inactive and if you put the switch to track 3-2 and rise the volume all the way up you barely hear a tiny bit of treble.) I believe a capacitor somewhere in there has dried and shorted internally, because if I add a higher voltage to the right channel input or the right side of the head it temporarily starts working again and sounds a little distorted. Left channel is perfectly fine. Any recommendations on which components I should replace?

@waynephillips1848

Ай бұрын

Hi to be honest it sounds like your caps are coming to end of life, as you need to open up I would recommend a full electrolytic capacitor and transistor change.

Hi. Why my GX 4000D run slow?

@waynephillips1848

Ай бұрын

Hi it could be a number of factors, slipping belt, dirty fly-wheel, may simply need the mechanical parts stripping and regreasing, as the original grease dries up. Sorry its really hard to diagnose without having the unit in front of me, i would recommend a belt change and basic service of the mechanical parts.

@user-tv3nu8zs3s

Ай бұрын

@@waynephillips1848 Thank you anyway.

Are the yellow caps bipolar?