technics organ

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technics organ

by josh
(canada)

i have a technics digital organ model no.sx-pr702/m.the company went out of business and i have a problem with the audio on it.the problem is that the sound is distorted on the main keys,but,works fine on head phones.if you have any suggestions or help i would appreciate it.thank you

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technics organ

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Dec 02, 2009
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distorted sound
by: Dick Rector

Hi Josh,

I am not at all familiar with your keyboard but if the sound is fine when using headphones I strongly believe the problem is in the speakers.
If you can, as a second test, connect your keyboard to an amplifier (home stereo will do if it has an AUX or LINE IN) meaning keyboard HEADPHONE OUT to AUX or LINE IN amplifier.
SET VOLUMES to ZERO and power up keyboard FIRST.
If the sound is normal, the problem is in the speakers.
If not however, you got a more serious problem. In both cases you need a prof technician to repair.

Good luck and please give some feedback to this forum so we all can learn something.

Regards
Dick
Bali (Indonesia)

Nov 17, 2011
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Distortion but not in the headphones.
by: Anonymous

Probably the fault is in the main amplifier board. The headphone output comes before the main amplifier board and obviously the sound is OK when it gets that far. Don't take the amplifier board out and switch the organ on with it out of the keyboard or you will do more damage. I had the same problem and fixed it by replacing one of the transistors which was not working properly. Cost about ten cents after many hours of searching to find which one.

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