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PR902 issues

Hi all, new to this site! I have two Technics keyboards a PR602 and a PR902C. The PR902C recently packed up. When powering on, a few seconds later there is a loud buzz from the speakers but no sound from keys. Some buttons work i.e. the Demo button shows …

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PR902 issues

Bumpydog

Bumpydog
Ireland

Total Posts: 4
Joined: July 7, 2015

Hi all, new to this site! I have two Technics keyboards a PR602 and a PR902C. The PR902C recently packed up. When powering on, a few seconds later there is a loud buzz from the speakers but no sound from keys. Some buttons work i.e. the Demo button shows the scrolling LEDs but many other buttons do nothing. There is nothing on the centre screen.

Would anyone be able to advise where to start looking? I do have a Service Manual for this keyboard (how do I upload it?) but limited workshop facilities. I have no problem probing around looking at power supply outputs but have no oscilloscope or other test equipment.

All help welcome!

Malcolm
Co. Meath, Ireland

Posted on July 8, 2015 at 10:58 AM
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2 Replies

admin

admin
United Kingdom

Total Posts: 1035
Joined: February 2, 2014

Re: PR902 issues

Hi Malcolm,

Sorry to not respond sooner. I don't have the technical knowledge to help you but I'll ask one of our friendly engineers to try to help soon.

If you would kindly fill in the contact form on the Help menu I'll email you regarding the service manual.

Many thanks,
Mike

Posted on July 13, 2015 at 11:52 PM

Bumpydog

Bumpydog
Ireland

Total Posts: 4
Joined: July 7, 2015

Re: PR902 issues

Hi Mike,

It seems that it's an IC issue on the main voice board and likely to be unrepairable. Would you know if it's likely to ever find a replacement board? Oh, I meant to say, it's a 900 not a 902.

Thanks, Malcolm

Posted on June 25, 2016 at 12:40 PM