Question about Philips Magnavox DVD/VCR Dual Player
Posted by Anonymous on
Sounds very much like a fault in the switchmode power supply, either due to several faulty components, including (but not limited to) electrolytic capacitors, and/or bad solder joints.
Unless you are tech. savvy with this sort of thing, your best bet would be to submit the unit to an authorised service centre, obtain a quote on the likely cost(s) of parts/labour involved, get a second opinion (as to what exactly is wrong and if it is fixable), then you can make a positive decision afterwards as to whether to go ahead and get this baby restored to full operational condition, or not. It is up to you.
Usually with intermittent/frequent shutdowns, the cause has almost always been the PSU. My experience has shown with this circuit, that the electrolytic caps are the most likely culprits (although it has been found that zener diodes can cause the same trouble, but only due to the caps failing - increasing the output voltage across them).
Electrolytics have a tendency to leak/split open, resulting in the above symptoms. Particularly bad if they are situated near ICs/transistors with heatsinks. They may or may not have compromised other components on the same voltage rail(s). All the caps in this circuit must be replaced TOGETHER at the same time (whenever repairing a PSU) to ensure reliability and no further issues later.
The simplest suggestion is to try different discs or use the RAM ones in your PC for the time being.
Posted on Apr 04, 2011
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Posted on Jan 02, 2017
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