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Repair Sinclair DM235 DMM

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Reinhard Zwirner

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Dec 5, 2010, 4:28:53 PM12/5/10
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Hi,

Can somebody please give me a hint where to find a circuit diagram or a
service manual for an old Sinclair DM 235 DMM (for free)? When switched
on only one digit is active displaying a random number. Additionally I'm
searching for a datasheet of AY-5-3507 display driver (?).

Any help is really appreciated.

Best regards

Reinhard

N_Cook

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Dec 6, 2010, 3:33:41 AM12/6/10
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Reinhard Zwirner <reinhard...@t-online.de> wrote in message
news:idh06i$a2r$02$1...@news.t-online.com...


somewhere in wwwland is a sinclair products forum


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