Question about Panasonic DMR-E55 DVD Recorder
Having read on your helpful site that the likely cause of my DMR-E55's powering down problem could be the V.Reg. STRG6353,. I'm attempting to remove the board but can't seem to locate the release tab on the ribbon connector( as described by 'Chipps') and as it seems fairly delicate I don't want to force it. I'm probably being a little dense here but can you give me anymore detail. Also I've read that a compound is recommended to aid with heat dissipation - Should I apply it directly to the component and is it costly? As you can tell, I haven't done this sort of thing for some time.
The ribbon is quite easy to disconnect. It is simply a push fitting. There are several ways to tackle it. Get a sharp pointed tool or large sewing needle. then carefully push it into one end of the connector at a right angle to the length between the join. If you use a magnifying glass, you'll see where the two halves of the connector join. You should be able to prise it up. Once it starts to lift, put your needle in the other end of the connector and lift that. It should pull away easily if you then put your finger and thumb at each end.
Regarding the heatsink compound. The reason for using this is to assist with heat dissipation. The idea is that it fills imperfections in the two surfaces that are pressed together, namely the regulator and the heatsink. This allows the heat to transfer more efficiently. Most people use far too much compound. All you need is a very thin smear on both surfaces before you press them togther. If you use more than that it will not make it more efficient, it will just make a mess.
Personally, I always fit an extra heatsink on these units.
Be very careful when removing the old component. I recommend using a pair of miniature wire cutters to cut the pins of the old regulator. Then remove the pins carefully from the board. The print will easily lift away from the board if you are not careful. It isn't a disaster if this happens but you want to try and avoid damaging the print if you can. Make sure the holes are nice snd clear before you fit the new regulator. Again a sewing needle is quite useful for this and less stressful to the print than solder braid or a solder ******. Also make sure the regulator is locked down tightly when you have finished. Again, just a thin smear of compound is enough.
Compound is not expensive, but you'll buy a tube, use a tiny bit and probably never need it again. If you have an engineer friend he or she may be able to help. Alternatively, take a look on eBay for the cheapest you can find.
Hope this helps, have fun and take care..
Posted on Apr 18, 2008
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Posted on Jan 02, 2017
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