DVP642/37 Power light flashing constantly.....won't power on
This origional post has been up since June 2006. The answer(s) about the 1000mf capacitor are right on target and has helped people even up to today (Aug. 26, 2008). It worked for me and the following might help others.
First find the power supply board. It is the one with the power cord attached to one end (make sure you unplug all power first!). This power supply has about nine minature electrolytic capacitors in the output of the supply. There is a large electrolytic near the input (elecrtical cord). Disregard this one and go to the other end of the board. The 1000mf, 10volt component you are looking for is near the middle of the 9 or so capacitors on this end. It will probably be the largest in this group (because it has the highest electrolytic value of the group) and the board surface will have an I.D. number of C316 adjacent to it.
DO NOT ASSUME THAT THE CAPACITOR WILL HAVE ANY SIGN OF A BULDGE, DISCOLORATION, OR ANYTHING THAT WOULD IDENTIFY IT AS A FAILURE! In my case the replacement solved the problem but there was absolutely no signs on, or around the capacitor. After replacing it, I checked the old capacitor with a (ANALOG) multimeter. The test showed leakage across the capacitor. In other words it was still working but had a high resistance path through the capacitor. This is exactly what I expected because when I checked the output voltage of the supply to the other 2 boards, voltage was present but was reading about 1/2 of what it was supposed to. The markings on the front (output) edge of the board indicate a -24 volts between ground (pin 4) and pin 3. Mine was reading approximately -12 to -13 volts.
I hope this will help others. As a matter of interest, this is an electrolytic capacitor and you should notice that the component taken out is marked negative ( - ) near one lead. Be certain to install the new one with the negative lead in the same manner! Also, any replacement you might find with a higher voltage rating should be at least 16 volts but a 200 or 1000 volt rating will work fine. Although, the higher the rating, the larger it will physically be. You probably would not be able to physically install anything over 50volt rating. The 35volt rating seems to be very available and a very good choice. With regard to microfarad (mf) value, 1000mf are very common but a 1200mf to 1500mf in a power supply circuit will work fine. Do not use anything less than 1000mf. Hope this helps others. This is going to contiue for this Phillips product until they all die.
Jun 09, 2006 |
Philips DVP642 DVD Player