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Can anyone help me please for this

Faris017

Apr 12, 2023
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Apr 12, 2023
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Hello, I have an old clock and I want to turn it on, but I encounter some problems in this circuit. What exactly is it converting from AC to DC or DC to AC or AC AC DC DC and how do I turn it onFDE4DEA6-8728-445D-BB3F-E94590C00226.jpeg82726D61-1BBB-4BF8-BB7D-0B0BF6840D18.jpeg27A3E817-70B7-418A-8871-E4AF344893BC.jpeg65AB93F9-1284-4BD4-8455-C65E7965E82B.jpeg
 

Alec_t

Jul 7, 2015
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Jul 7, 2015
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Welcome to maker.pro.
Brand/model?
What markings (if any) are on the clock case?
Did/does it have a mains plug or battery contacts?
Unless you know where the 5 wire ends in pic 4 are supposed to connect there's not much chance of getting the clock working.
 

danadak

Feb 19, 2021
781
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Feb 19, 2021
Messages
781
Capacitor klooks like it is bulkging, maybe shorted internally......

1681295284408.png


And obviously the resistor needs replacement. And the transistor checked.


Regards, Dana.
 

Faris017

Apr 12, 2023
2
Joined
Apr 12, 2023
Messages
2
Welcome to maker.pro.
Brand/model?
What markings (if any) are on the clock case?
Did/does it have a mains plug or battery contacts?
Unless you know where the 5 wire ends in pic 4 are supposed to connect there's not much chance of getting the clock working.
 

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kellys_eye

Jun 25, 2010
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Jun 25, 2010
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Serial numer 001.......... :oops:

That could prove interesting/valuable... The pictures you posted don't give enough details though. What is a stepper motor doing inside a clock - a clock that doesn't appear to have the physical space to have those boards fitted in the first place? Perhaps the stepper is controlling the hands of the clock? If we had more pictures it could make the determination of what the board actually does easier to figure out....

Either way I 'suspect' this may be a very early radio-controlled (or similar) clock - possibly one that's part of a clock system i.e. the master that feeds signals to slaves as would commonly be fitted in large factories and/or business complexes.

The board may be something that provides a voltage for lighting purposes (small fluorescent tube?) but certainly won't be used to timing as the output is far too 'variable' and certianly not stable enough for timing.

It may even generate a 'beep' to mark off seconds/minutes or whatever..... who knows. Show us a LOT more pics of the whole unit from various angles and bear in mind that serial number 001 could mean the thing has a lot of value.
 
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