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akai gx 4000d no audio out of right audio out

just purchased an akai gx 4000d an found that i have no audio on the right audio out an the right mic jack is not working VU meter is lit but no response from audio or mic jack for right side. looked at circut board an desktop magnifier an saw no cracks blown soilder runs, cold soilderjoints, or burned areas or componets. anyone have any ideas on where to look besides the local electronic repair guy. all the left sides work



akai gx 4000d no audio out of right audio out

Service tips: check for all transistor code 2SC458 and replace it (about 14 pieces).
In my website (in portuguese, sorry, but translate it by Google Translator) explain about this problem.

http://akaivintagebr.weebly.com/1/post/2012/01/gx-4000d-comentrios-e-dic...

Good luck!

Edson
from Brazil