pedrothelion

MZ-R55 fried

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Is there a way to bring to life an old MZ-R55? So long ago I used it with a 6V power supply frying. Now it's just a nice knick-knack.

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if  you used  the wrong power supply then its probably dead? just get another  from ebay?

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Yes I bought another MD recorder (NH700) for 60 €. A real deal. I just wondered if there was a way to bring my old MZ-R55 back to life or I had to get rid of it and throw it in the garbage.

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Just using a 2 pins AA case fitted for your MZ-R55 is also a good solution to bring him life.

mini_170603124042256985.jpg

 

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Presumably it depends on what damage was done. If the charging circuits (only) are messed up, then Philippe is right, and certainly worth a shot.

I would tend to think that application of 6V might have had other effects. In this case nothing short of major disassembly and analysis is going to work. It does seem likely, on reflection, that even 6V probably did not blow up anything more than the very first stages of the power supply. Bravo Philippe for thinking outside the box!

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15 hours ago, sfbp said:

Bravo Philippe for thinking outside the box!

welcome

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On 3/6/2017 at 0:17 PM, PhilippeC said:

Just using a 2 pins AA case fitted for your MZ-R55 is also a good solution to bring him life.

mini_170603124042256985.jpg

 

Thank you Philippe! I will try. My unit is in good condition like yours.

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DSC_0011 (2017-06-09T09_11_34.000).JPG

I was able to recover the original power supply of my R55 and after over 5 years of inctivity it turned on! Unbelievable. Before I heard a strange smell of burned ... And to think that I was going to throw it into rubbish.

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What did you do to make it work finally ?

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First I plugged the AA battery pack (as you suggested). It did not seem to work then I felt a slight stench of burn. Then I connected the original power supply and after a few seconds the minidisc turned on. It seems to work all to perfection now.

Yet I remember when I plugged him into a cheap 6V power supply five years ago,
and the snap I heard came from the recorder with a little cloud of smoke ...  I do not know what happened but I'm happy to be able to use my MZ-R55 again.

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I suggest you open your unit just in case to look at where this old smoke is supposed to come from. Sure you will need to clean something inside with an air sucker (the gentle kind one).  Maybe this was only some plastic parts... Very tiny burnt parts could stop your unit one day or the other.

lcd-appareil-photo-objectif-pompe-air-po

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DSC_0012 (2017-06-09T09_12_08.000).JPG

 

I tried to shake the recorder and a small fragment (that in the photo) came out that seems to be part of a capacitor. I will try to use a air blast spray because I feel something else moving inside...

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Or a vacuum cleaner with a fin net (gauze...) on the mouth + low power. Talking about mouth, a dentist mirror and light could be useful.

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Component shown looks like a surface mount fuse (SMD)

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