Question about Sony DVP-NS575P DVD Player
I have a defective Sony DVP with SMPS. The SMPS is defective. On check up found the fusible resistance in the path of AC input is blown off and pin No.5 of Oscillator IC is burnt off. Requst your guidlines to proced further. Also let me know, how to confirm the working condition of Switching transformer both in cold and hot tests. Thank you.
You can get complete power supply as one part from Sony. You can't repair it on component level because components are not available.
Posted on Jul 26, 2008
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Posted on Jan 02, 2017
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Dec 01, 2015 | Sony HVR-HD1000U Camcorder
In most cases the standby light might blink with different rapidity to indicate a fault relevant to the processor. It is possible that most of these indicate that there are errors in the processing section . Since there is a possible short or leak in the circuit the output driver section can take in huge current to trip the SMPS or from advice from the micro processor. Remove the power plugs and make sure that high voltage sections are discharged of the potential stored in capacitors. Look for visible signs of leak or of busted capacitors. Look for bulged capacitors or damaged components- burnt or busted. Use a multimeter to check the continuity or shorting in components, if so detach from circuit and test . If the voltage builds up and the set power ON and then shuts up then the suspected section must be checked in detail.
The processor must have the +5 voltage to the function properly , the +B and secondary voltages also must be checked to infer the fault. Trace with caution and in running through the signal path , circuit trail.
Check for tips to check the SMPS unit:
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