Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Boris Mohar
 
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Default HP 3470A / 3472A Multimeter dead


Hello,

My favorite piece of nostalgia suddenly stopped working. The +5V and other
supplies are ok. The display is blank except for the decimal point. The
clock is working but the IC it passes the signal to does nothing with it. I
assume that it is a divider of some sort. It has proprietary Motorola number
1820 -0567 I know it is a long shot but maybe one of you know.
--

Boris Mohar


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GS
 
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Did a Google on your HP number.....shows a cross ref to MC4024 with the
basic description DUAL VCO.

Best of luck with your repair - Gord

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Boris Mohar
 
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On Sat, 15 Jan 2005 13:21:22 GMT, GS wrote:

Did a Google on your HP number.....shows a cross ref to MC4024 with the
basic description DUAL VCO.

Best of luck with your repair - Gord



Thanks Gord, I will try that. It never occurred to me that Google would
have that indexed.



Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca
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Boris Mohar
 
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On Sat, 15 Jan 2005 13:21:22 GMT, GS wrote:

Did a Google on your HP number.....shows a cross ref to MC4024 with the
basic description DUAL VCO.

Best of luck with your repair - Gord


Digging some more it turns out that the culprit is 1820-0798 custom six
decade counter. Does anyone have on that I could buy?



Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca
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