Question about Philips MCD139 System
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here is the initial solution for you :
Disconnect the coil ( in yellow circle ) , just to determine if it is from the load
or from the diode or capacitor
I will post for more should you need further assistance
Posted on Oct 06, 2010
If you've removed the load to the transformer, you should see something on the output pins, which I assume are 7 & 13. The transformer could have a bad output winding. Are you getting continuity at all (for the windings) on 7 & 13?
If not, or if less than expected, the transformer could be bad.
Tried to run down a schematic, but couldn't find a service manual on the net.
I'd suspect the transformer- could be shorted, or open.
Good luck, and hope this helps
Posted on Oct 04, 2010
get a meter, use it to read the components on the power board, such as capacitor, diode, etc. Detect the bad component make necessary replacement and the system should power up again.
The system is having a power problem, and a meter is needed so that you can detect the fault by reading the power board.
Posted on Oct 01, 2010
It sounds like the board has problems for sure, what exactly are you looking for as far as for help? I may be able to help you find a replacement board, but for this unit it will be difficult. You will be better off getting a "broken" one of these units and pulling the board from that or just replacing the unit outright.
Give me more specifics here and I can help for sure.
Posted on Oct 02, 2010
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Posted on Jan 02, 2017
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