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  mephisto exclusive
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   Author  Topic: mephisto exclusive  (Read 1139 times)
Ajax
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Re:mephisto exclusive
« on: July 6, 2005, 06:07AM »
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OK thanks for the advice Dick. I don't have a manual with it but I have ordered one from Saitek.

                                                      Regards
                                                                    Ivor
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Dick Schneiders
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Re:mephisto exclusive
« Reply #1 on: July 6, 2005, 03:40AM »
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Quote from: Ajax on July  6, 2005, 01:38AM   

Thanks gentleman for your advice. I have tried my universal adaptor 230v using a positve centre connection on 7.5 volts and it works a treat! I tried the two pin adaptor that came with it (HGN5001) and the board did not respond. Its great to have access to other chess computer enthusiasts who know what they're talking about, so thanks again!
                                      P.S. The MMIV module that came with the board, is it meant to come out? Just seems a little tricky, or are they all like that? And can I use the other mephisto modules with it, i.e. Polgar, Senator, Magellan  etc.(and maybe one day Resurrection)?

                                            Regards- Ivor (Ajax)


Yes, the modules are removeable and you can then use the other modules (plus many more) that you mention.  My H&G Exclusive came with the Polgar modules, and I have never tried to remove them.  I don't own any other of the modules, but someday hope to.

Did you get a manual with yours?  My manual describes the procedure as follows:

Turn off the computer.  Pull out the drawer as far as possible.  Push the securing latch on the top right hand side of the drawer away so that the drawer frame is released and can be tilted up away from the modules.  The modules can then be pulled out with a sharp tug and changed.

Dick Schneiders
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Ajax
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Re:mephisto exclusive
« Reply #2 on: July 6, 2005, 01:38AM »
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Thanks gentleman for your advice. I have tried my universal adaptor 230v using a positve centre connection on 7.5 volts and it works a treat! I tried the two pin adaptor that came with it (HGN5001) and the board did not respond. Its great to have access to other chess computer enthusiasts who know what they're talking about, so thanks again!
                                      P.S. The MMIV module that came with the board, is it meant to come out? Just seems a little tricky, or are they all like that? And can I use the other mephisto modules with it, i.e. Polgar, Senator, Magellan  etc.(and maybe one day Resurrection)?

                                            Regards- Ivor (Ajax)
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Robert Weck
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Re:mephisto exclusive
« Reply #3 on: July 5, 2005, 06:21AM »
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Quote from: Ajax on July  5, 2005, 03:09AM   

I have just purchased a Mephisto Exclusive from Ebay, but I am unsure of the power supply. The board is one of the older Hegener + Glaser ones and the power adaptor that came with it is a two pin 220v input/ 8v 250ma output. I don't want to blow the set on our UK 230/240v power supply!

That should be no problem; i'm pretty sure, that you could use this (HGN5001, right?) without damaging something! I don't think that H&G produced a different adaptor just for the UK. 120 to 220Volt is a significant difference, but not 220 to 240. Here in Germany we have around 230 V (just measured!)

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I have a Universal adaptor 230v /300ma which I use on my other chess computers but don't want to risk it till I am sure. Also, this older board doesn't tell you if it is a positive centre or negative centre connection like it does on the newer chess computers! Hope someone can help!

Like Dick said correctly, most chess computers need a positive tip and so do Mephisto Computers. Set your Universal adaptor to 9V (most don't have 8 V) and positive tip and everything should work fine.


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Robert
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Dick Schneiders
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Re:mephisto exclusive
« Reply #4 on: July 5, 2005, 05:27AM »
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Quote from: Ajax on July  5, 2005, 03:09AM   

I have just purchased a Mephisto Exclusive from Ebay, but I am unsure of the power supply. The board is one of the older Hegener + Glaser ones and the power adaptor that came with it is a two pin 220v input/ 8v 250ma output. I don't want to blow the set on our UK 230/240v power supply! I have a Universal adaptor 230v /300ma which I use on my other chess computers but don't want to risk it till I am sure. Also, this older board doesn't tell you if it is a positive centre or negative centre connection like it does on the newer chess computers! Hope someone can help!
                                                  Thanks- Ajax


Ajax,

You will probably get more information from others, but here is what I know.

I, also, have one of the older Exclusive computers and the power supply that came with it is the HGN 5504.  It is rated 120 v input (for our US current) and 8v, 600 ma output.

From what I understand, the input needs to be rated at the current rating of your local electricity.  So your universal should be the one to use for that.  The voltage rating of the output is important and needs to be the same as what the computer requires, in this case 8v.  I think that you can damage the computer if this rating is enough too much more.  You don't say what your universal output voltage rating is, but I guess it is also the needed 8v.  The ma rating is not so important and can be in a large range and still work fine.  My H&G one is 600 ma and the one you have from H&G is 250 ma.  Your universal one rated 300 ma will work just fine, and it is very close to the rating of the original one you have. 

The polarity of the center tips is also not *usually* an issue.  Almost all chess computers use a positive tip, with the one exception I know of being the Novag brand of computers.  However, in almost all situations if you try to use the wrong polarity, the computer will simply not work.  It should not cause any damage.  I have read of some inexpensive chess computers that were damaged, though, as they didn't include the necessary protection for this problem.

I feel that your universal should be just fine for the H&G Exclusive.  It is rated the correct rating for your UK input current, and is very close to the ma rating needed for the computer.  I assume that it is rated 8v on output, and that is more important than the ma rating.  The polarity of the tip, as noted above, should not be an issue at all.

Dick Schneiders
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Ajax
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mephisto exclusive
« Reply #5 on: July 5, 2005, 03:09AM »
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I have just purchased a Mephisto Exclusive from Ebay, but I am unsure of the power supply. The board is one of the older Hegener + Glaser ones and the power adaptor that came with it is a two pin 220v input/ 8v 250ma output. I don't want to blow the set on our UK 230/240v power supply! I have a Universal adaptor 230v /300ma which I use on my other chess computers but don't want to risk it till I am sure. Also, this older board doesn't tell you if it is a positive centre or negative centre connection like it does on the newer chess computers! Hope someone can help!
                                                  Thanks- Ajax
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