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Posted on Jan 02, 2017
SOURCE: Panasonic DMR-E55 DVD Recorder
Ok guys, you asked for a fix for the DMR E55 Self Checking cycle. Here goes.
In 99% of cases this is caused by a faulty regulator on the main power board. The power board is located on the right hand side of the unit. The regulator is IC001 which is mounted on a thin metal strip which acts as a totally inadequate heatsink. This means that this component constantly works at temperatures beyond its tolerance. Because of this it usually lasts a couple of years and then starts causing problems. The Self Checking syndrome is typical. If the regulator burns out completely, it can take other components with it, blow fuses and scorch the circuit board.
If you are competent in using a soldering iron with care, order an STRG 6353 regulator. These can be obtained online from a number of suppliers. Disconnect your DMR E55 from the power source and remove the lid.
Next, remove the fixing screws from the circuit board on the right where the regulator is located. Carefully remove the multi connector on the left side of the board. Remove the screw above the power connector on the rear of the unit. The power board can now be removed from the cabinet. Using a small pair of wire cutters, clip all five pins from the old regulator as close the the top of the board as possible. Undo the screw securing it to the heatsink and remove the old regulator which can now be thrown away.
Next, using your soldering iron, remove what's left of the pins from the printed board and with a solder sucker or desoldering braid, clear the holes ready to accept your new regulator. Be careful because if you over heat the print it can lift away from the board.
Use a little heatsink compound on the back of your new regulator, poke the pins through the circuit board and then secure it to the heatsink. I usually fit an extra heatsink on these units which helps to reduce heat and prolong the life of the new component.
Next, resolder the 5 pins on the print side of the board. Use a magnifying glass and make sure you haven't missed anything or bridged connections in error and caused short circuits.
Now put the board back. This can be a little trick but it's easy enough if you take care. Replace all the screws and carefully reconnect the multi connector.
If you have followed this correctly, switch the unit back on, pop in a DVD and give it a try. Unless you are very unlucky, You DMR E55 will no longer repeatedly self check and will operate correctly. Whilst it saddens me to hear that some of you guys would toss your DMR E55s into the trash can for such an easily repairable problem, please do not attempt this unless you are confident in your own ability.
Finally, do check that the fan operates but remember it is temperature controlled and will not activate until it is needed. Do not assume it is faulty because you do not see it working straight away. I have repaired lots of DMR E55s and I have never found a single fan or fan control circuit to be faulty. That's not to say it can't fail. good luck...
Posted on Jan 15, 2008
ok your son's psp has malfunctioned and instead of trying to charge the batteries it drained them. i would recomend for u to get ur son a new psp and buy a another battery for your daughter.
there is a newer battery being sold that you put AA batteries inside
to make it work. check out your local best buy and wal*mart
Posted on Apr 21, 2009
My husband and I did the exact same thing for our grandson when he was 8 months old. We pulled the car out of the attic last night and the battery did not work. My husband called the manufacturer customer service at 714-256-9888. He was told that the batter was too old and would have to purchase a new one. My husband called around for the item description that they suggested and found a comparable battery at Interstate Battery in our hometown. Good luck. I know we were very disappointed when this happened, but there is hope. Hope this helps.
Posted on Jul 26, 2011
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