Pentranic monitors

demogo

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Donor 14 years: 2012-2025
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Is there a good place to go to so that I can learn more about my Pentranic monitor?

I have a 25" Pentranic mounted vertically that seems to mostly work okay. I haven't pulled the chassis to identify it more precisely because I have enough other fish to fry at the moment.

I have tried looking at the chassis w/o removing it and can't find any model numbers on it. There may be a spot or two that I can't see because it's mounted vertically.

Did Pentranic make many models of 25" monitors/chassis?

How would I confirm that it takes a 15khz signal?

Inquiring minds want to know!

Edit: pictures attached if this helps
 

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I think I found the model number -- CH288.
 
Thanks!

Yes, I'd just pulled that up myself.

Found that Rick Neiman has the schematics up on his site too.
 
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