Heathkit GC-1000 Most Accurate Clock part need

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mdjac9494
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Joined: Mon Jul 21, 2003 6:47 pm
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Heathkit GC-1000 Most Accurate Clock part need

Post by mdjac9494 »

I am looking for Heathkit part number 444-200 (microprocessor for Most accurate Clock Model GC-1000 also I have problem in Receiver circuit board but I do not think receiver problem because I think problem in 444-200 Microprocessor Most Accurate Clock has 5Mhz 10Mhz 15Mhz LED and Display are Light on and running but 5Mhz LED stay light for 3 seconds then next to10Mhz LED stay light for 3 second then next to 15Mhz LED stay light for 19 second then return to 5Mhz LED and also speaker is off or muted how can you check internal 444-200? I want to know when GC-1000 adapter replace 444-200 available you told me it is not part available and I wonder Can I pull the receiver Circuit board from Most Accurate Clock unit and then aligning and testing it without microprocessor 444-200 (MK3870-20)? If so, tell me how connect it to power supply and other type connect before I can do? any one can make back up or create Microprocessor as 444-200? :roll:
I need replace 444-200 but Heathkit was gone and how can I get backup 444-200 (MK3870-20) any one can program or back up chip for Most Accurate Clock model GC-1000
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