UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Akai GX-77 cap list

NorfolkDaveUK · 8th Nov 2018, 10:43 pm

The problem is , the motors aren`t made to work on the opposite direction so the non powered spool just drags , and it sounds like yours is as bad as everyone's .mine does the same thing , lubing it wont help .

The official fix is ....

Change R1 on the intermediate boards from a 100ohm 3w metal film to a 150ohm metal film ,

also

change the following on the power supply board...

R1 from 2.2k ohm to 5.6k ohm 1/4w
R2 from 1.5 ohm to 1.2 ohm 1/2w
R3 from 1.3 ohm to 1.2 ohm 1/2w

Whether that is going to make any difference at all I have no idea .

I`m not a fan of the relay mod and I`ve seen it several times . If I have to go that route I will but I will explore every other avenue first I dont think the relay mod does the tape any good really .

8th Nov 2018, 10:43 pm	#8
NorfolkDaveUK Banned Join Date: May 2018 Location: Norwich, Norfolk, UK. Posts: 605	Re: Akai GX-77 cap list The problem is , the motors aren`t made to work on the opposite direction so the non powered spool just drags , and it sounds like yours is as bad as everyone's .mine does the same thing , lubing it wont help . The official fix is .... Change R1 on the intermediate boards from a 100ohm 3w metal film to a 150ohm metal film , also change the following on the power supply board... R1 from 2.2k ohm to 5.6k ohm 1/4w R2 from 1.5 ohm to 1.2 ohm 1/2w R3 from 1.3 ohm to 1.2 ohm 1/2w Whether that is going to make any difference at all I have no idea . I`m not a fan of the relay mod and I`ve seen it several times . If I have to go that route I will but I will explore every other avenue first I dont think the relay mod does the tape any good really .