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Offline tcTopic starter
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cs1220xd  compass 77b
« on: January 27, 2018, 02:25:13 pm »
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hi i am trying to restore an old compass 77b non automatic and would like to know if it is possible to get circuit diagram  or help with sourcing components, thanks

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« Reply #1 on: January 27, 2018, 07:41:15 pm »
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   I have the 77 Auto, 94B and a unknown possible 84b schematics.

Yalp if you want them.

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cs1220xd  compass 77b
« Reply #2 on: January 28, 2018, 03:09:28 pm »
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that would be great. do you know what the differances are between manual and auto tune circuitry

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« Reply #3 on: January 28, 2018, 05:22:21 pm »
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  I really don't know without seeing the NON.   I have a old 94B here that works if you hold your mouth just right.  I need to see what's loose in it. 

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90 series part layout and signals.pdf
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D - Compass77AT.jpg
D - compass 94b.pdf
compass 84b maybe.pdf

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