Question about Panasonic DMR-E55 DVD Recorder
Hiya were do you get the extra heat sink from i have looked at mine and it hasn't even got any vains it's just a small piece of metal please can you help Best Regrds Tony
Look on ebay or Google for a TO220 heatsink. Believe it or not, the thin metal strip you have referred to, is in fact the manfacturer's attempt at heatsinking the regulator. It is all but useless. There is one here that would be ok.
You will need to bend the veins to squeeze it into the space available. Do this carefully because they can easily break off when you bend them.
Alternatively, consider bolting the regulator to the inside of the cabinet instead. To do this, remove the power board, remove the old regulator completely. Solder flexible PTFE covered link up wire to each pin on the regulator and leave these about 4 inches long, Use heatshrink sleeving or plastic tube to cover all the solder joints, Drill a small hole in the bottom of the cabinet. Use some heatsink paste, a mica insulator on the back of the regulator and bolt it firmly to the inside of the cabinet under the power board. Solder each PTFE lead to the where the pins would have been soldered under the board and then neatly fold the wires under the board before refitting it. I have repaired about 6 of these using this method and I can confirm that the regulator hardly gets warm as the whole cabinet acts as the heatsink. Although it is more difficult to do.
Only attempt any repair or modification if you are confident in your competence in basic practical electronic work.
Posted on Sep 11, 2008
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