Tenma 72-845 Oscilloscope Manual Wanted

ksarocky · Mar 24, 2019

I recently purchased this 100MHz oscilloscope for $60, and I'd like to find a user's manual. Any leads?

MrChips · Mar 24, 2019

This oscilloscope appeared under many aliases.

Tenma 72-720
Elenco MO-1251
Hung Chang OS-620
Neotronics OS-620
JDR Model 2000
A-1 Electronics
AW Sperry 620C
Tenma 72-320
Dick Smith Q-1240
Aron BS-601
Degem System 112
Ramsey Model 2200

Search Google for Hung Chang OS-620 and you will find the service manual.

Reference:
https://www.eevblog.com/forum/testgear/my-$50-scope-seems-doa-tenma-72-720/25/

MrChips · Mar 24, 2019

Sorry. I thought that the first time I read the title of this thread I saw 72-320 or 72-720.

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Tenma 72-845 Oscilloscope Manual Wanted

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Tenma 72-845 Oscilloscope Manual Wanted

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