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PR903C blank screen

Technics PR903C. The unit has failed, with a backlit but blank screen. Research on the web suggests that the processor board / main board has "dry" solder joints. i.e. early days of non-lead soldering techniques. Does anyone have any info to add. Perhaps …

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PR903C blank screen

sparky

sparky
Canada

Total Posts: 3
Joined: October 3, 2015

Technics PR903C. The unit has failed, with a backlit but blank screen. Research on the web suggests that the processor board / main board has "dry" solder joints. i.e. early days of non-lead soldering techniques. Does anyone have any info to add. Perhaps an internal layout, anything

Posted on October 3, 2015 at 8:10 PM
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3 Replies

admin

admin
United Kingdom

Total Posts: 1055
Joined: February 2, 2014

Re: PR903C blank screen

Hi sparky,

I'll upload the Technics PR903 Service Manual in the next day or two. Hopefully that will help you to track down the issue.

I'll respond to this post again when it is uploaded.

Best wishes,
Mike

Posted on October 3, 2015 at 11:28 PM

sparky

sparky
Canada

Total Posts: 3
Joined: October 3, 2015

Re: PR903C blank screen

Mike,
I appeciate this very much. I never opened it up before, so this will help the process.
Wayne

Posted on October 5, 2015 at 12:45 AM

admin

admin
United Kingdom

Total Posts: 1055
Joined: February 2, 2014

Re: PR903C blank screen

Hi Wayne,

The PR903 Service Manual is now available in the Members Area. It has extensive help for you or your engineer to carry out tests and help resolve problems.

I'll be adding pages for several PR Digital Ensembles soon but for now the manual is in the All Manuals and PDFs section.

Best wishes,
Mike

Posted on October 5, 2015 at 6:17 PM