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  Problem with Novag Constellation 3.6 MHz
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   Author  Topic: Problem with Novag Constellation 3.6 MHz  (Read 728 times)
Ismenio
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Re:Problem with Novag Constellation 3.6 MHz
« on: May 23, 2007, 10:04AM »
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Hi Malte,

I may be able to help you with that magnet. But I need about a week. Please email me your address (it's best to email me rather than send a private message here on the forum as I don't log in as often as I want to )

Regards,

Ismenio
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maltestenzel
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Re:Problem with Novag Constellation 3.6 MHz
« Reply #1 on: May 21, 2007, 10:51AM »
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Hi Ismenio,

I have removed the capacitors - unfortunately the reading with an multimeter seemed okay (no excessive leakage, loading). But since I have already removed them from the board, I decided to replace them with new ones, since the test above is not always accurate I was told.

Additionally, someone from schachcomputer.info gave me the hint to use 12V for powering the unit up for the first time, since I only have a DC power supply instead of 8.5V AC. Mind you that I have tested putting 9V DC (as stated in the manual) to the battery compartement directly without luck before.

Anyway, both combined brought the Novag back  to life - so many thanks for your help x))

Edit: One of the figures is missing the magnet and felt part at the bottom - any idea where to get these from? ^^
« Last Edit: May 21, 2007, 12:30PM by maltestenzel » Report to moderator Logged
Ismenio
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Re:Problem with Novag Constellation 3.6 MHz
« Reply #2 on: May 20, 2007, 06:57AM »
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Hi Malte,

Based on what you said and since you're willing to try to fix it and is comfortable handling a soldering iron, I would try to check those capacitors first. If you have a multimeter you should be able to check them out but they have to be out of the board (or at least one of the terminals must be de-soldered) for you to get an accurate reading.

However, since they do look bad, I would replace them first.

If you have problems with the EEPROM, I'm afraid it will be very hard to fix it.

I hope this helps.

Best regards,

Ismenio
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maltestenzel
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Problem with Novag Constellation 3.6 MHz
« Reply #3 on: May 19, 2007, 10:38AM »
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Dear Chess Comp Community,

I have found an old Novag Constellation 3.6 MHz when helping my girlfriend terminate the household of her grandfather.
Since in my youth I have been playing a lot of chess, I wanted to start it up. I used a power supply that was stored nearby and looked like it was meant for it, unfortunately it was not (DC voltage instead of AC & 12V instead of 8V ). Edit: Actually the reading was wrong since it was non-stabilized. It was set to 6V and 7,5 V

However I believe the chess computer was not fatally damaged since all LEDs were lighting up and it was beeping - so at least the voltage transformer did something ^^.

Since I have no AC supply, I connected 9V DC directly to the battery compartement - which lead to the same result (all LEDs lighting up, beeping).

I don't know at what time the chess computer worked last.

I have opened it up, seems like all three capacitor lost a little of their fluid, I do not know if this can cause the fault tho.

Has any one of you any idea of what to do to get it working again? Last ressort would be bringing it to a professional, but since we both are students and since I can handle a soldering iron, maybe its just a little known issue I can fix?

Or is the EEprom "dead" after all these years? Can I reprogram it / buy it from somewhere?

Kind regards,
Malte
« Last Edit: May 23, 2007, 02:15PM by maltestenzel » Report to moderator Logged
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