AKAI GXC-740D cassette deck - 1976 - REPAIR - Part 2 

Thanks!

Hi. Thank you and I really appreciate your message. But unfortunately I'm in Europe.

It will be expensive depending on the problem. What is wrong with yours?

@@retrodeck1956 Was the idler wheel in good condition on yours?

@@retrodeck1956 That PW arm (part #6) was frozen and gave you some problems, good thing you were able to fix the problem.👍

There is a place in San Diego Called classic audio repair and they work on vintage equipment you can contact them and ask them.

This is a more complicated device. The source of the error must be narrowed down. It doesn't make a sound, one side makes a sound or none at all, displays move, there is sound on the headphones, or no sound on the line output, etc. The head or the wiring may be faulty. But it is also possible that a microswitch has a contact fault. Or the recording slide switch is faulty.

@@retrodeck1956 I narrowed it down to an open coil on the head. I have rewired the head to use the record head and I am now getting sound through both channels. The highs are not as good as the record and playback heads are a different ohm rating. Would you know if its possible to open up the heads? Or would there be an alternative head that would fit?

@@davejames737 Then you know what's wrong. I didn't take the Gx head apart. But I don't think it can be fixed. They rarely sell disassembled parts, I would replace them.

Hi. The servo pc board - small panel - has a VR1 potentiometer.

@@retrodeck1956 osc PC board ? VR1 L CH & VR2 R CH , please

@@lunamarlon Part 1 at 7:24 shows the servo board, VR1 speed pm.

@@retrodeck1956 oh ! Video os for 740D Model , sorry , my Deck is GXC-710D , no have board servo…

I checked the pinch roller you wrote about, the tape guide cannot touch it. Maybe the tape guide is broken? The tape guide is trained in such a way that a kicker pushes it and the arm prevents it from touching the pinch roller.

@@retrodeck1956 I installed the new belts last night and I was operating the deck and noticed that when I pressed play sometimes the deck would play fine and sometimes the tape guide would put pressure on the pinch rollers. I have cleaned some of the old grease on the transport and applied new grease but the transport keeps sticking and not sliding properly. It is either moving up too much or not enough. I will have to keep on troubleshooting and hopefully I can find the cause of the problem.