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  Tasc R30... incomplete
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Ismenio
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Re:Tasc R30... incomplete
« Reply #20 on: May 31, 2005, 07:18PM »
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Christian,

Thanks so much for all that great info! I shall try it when I have a chance!
I'll let you know how it goes and of course I'll let you know about the pieces!

Thanks for all your help!

Ismenio
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Endspielgott
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Re:Tasc R30... incomplete
« Reply #21 on: May 31, 2005, 06:09AM »
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Ismenio,

Electronic components heat up when they work, and they radiate this heat. This is why the CPU must
be cooled ....
But they are more ICīs inside the Tasc than the CPU. There are the EPROMS with the ChessProgram itself.
We assume that these work since you exchanged them.
But there are also ROMs which contain a sort of BIOS...maybe one of these is not working.
This can probably be found out with cooler spray. Since the working ICīs radiate some heat and the
non-working ones sometimes do not, the non-working ones can be identified since they do not heat up.
The problem is that the ICīs do not heat up very much (we cannot feel the difference with our
fingertips).
That is where the cooler spray comes into play. You just cool down one of the ICīs on the board,
switch on the device. If it heats up to normal temperature, we assume it works.
Switch unit off. Cool down next IC.
Switch unit on...and so on...

The cooler spray only increases the temperature difference so that we can feel the difference...

This is no 100% method, but I did it once with my C64 (a LOOONG time ago) and it worked...

Whether the Chips on the Tasc use CMOS technology I do not know.

Concerning the pieces...GET THEM!

Of course you can send me the other unit, I will see what I can do.

Arno Kreuzberg did repair 4 Tasc so far, this is what he told me once. He did tell me also that
they are complicated devices and not easy to repair. But that we already know...

I gave him a call yesterday, but again he was very busy and did not have much time. So I did not
yet ask him on your behalf, but I will do it (it is not forgotten).

Christian
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Ismenio
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Re:Tasc R30... incomplete
« Reply #22 on: May 31, 2005, 05:22AM »
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Christian,

I have never worked with cooler sprays before. I know very little about them. It is used to protect electronic components right? What is your idea?
I want to exhaust what I can do here before I ask you to spend some of your valuable time looking at this.
Another question for you: Do any of the chips on the Tasc use CMOS technology?

I found a guy who has only the Tasc pieces! Can you believe this? I'm trying to get them from him. I know this is a long shot, especially when we know that even if the pieces are functional, they may not work on my board, but I can't pass this opportunity. I'm trying my best not to have my hopes high that they would work with my board but that's not easy. If that works, would be OK with me sending the other unit for you to play with if I can't get it to work?

Also, do you know if Arno Kreuzberg repairs Tasc computers?

Thanks,

Ismenio

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Re:Tasc R30... incomplete
« Reply #23 on: May 31, 2005, 12:20AM »
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Ismenio,

I have got another idea how to find the non-working part(s):

Did you ever work with cooler spray or do you even know what this is?

Christian
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Ismenio
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Re:Tasc R30... incomplete
« Reply #24 on: May 22, 2005, 11:24AM »
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Quote from: Endspielgott on May 22, 2005, 07:00AM   

What exactly do you mean with "the good unit got stuck" in the middle of the game?
Does this happen when you try to put pieces on the supposed non-working squares of you SB? Or is it anything else?

I will be on business trip tomorrow, so I can answer you on tuesday evening (which is noon in US)

Christian


Thanks Christian. Take your time on this as I am not in a hurry here. When I say that the working unit is stuck, I mean that it is still displaying this screen:



and I can't get out of it. If I plug in the board, a series of squares keep flashing in a random pattern.
I tried to reset it using different keys but nothing worked. It must be something in the RAM since I get this even after I exchanged the EPROMs.

Ismenio
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Re:Tasc R30... incomplete
« Reply #25 on: May 22, 2005, 07:00AM »
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Quote from: Ismenio on May 21, 2005, 05:33PM   

Christian,

I did swap the EPROMs and here's what I got.

The one that was working (kinda) still works the same way and the other one still shows the same fatal error. Could it be something with the RAM chips? Are they hard to find?

So, the EPROMs (HI and LO) on both units seem to be working fine. I guess that's some kind of good news.

I still have the "good" unit stuck in the middle of game, I think in debug mode. Any ideas on how to reset it? pressing BACK while turning it on is not working.

Well, let  me know that you think.

As always, I appreciate your input!

Thanks,

Ismenio


Ismenio,

this is indeed good news, since you have not to convince somebody else to sell his program eproms.

And it is bad news, since the error is somewhere else.

I know the Unit can be reset "soft", you just have to switch to the menus to "system", and there you can reset the RAM. But this will not help you with the "fatal unit". I did not have the chnace to talk to Mr Kreuzberg on this behalf, but I will do it this week. Maybe he has an idea.

What exactly do you mean with "the good unit got stuck" in the middle of the game?
Does this happen when you try to put pieces on the supposed non-working squares of you SB? Or is it anything else?

I will be on business trip tomorrow, so I can answer you on tuesday evening (which is noon in US)

Christian
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Ismenio
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Re:Tasc R30... incomplete
« Reply #26 on: May 21, 2005, 05:33PM »
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Christian,

I did swap the EPROMs and here's what I got.

The one that was working (kinda) still works the same way and the other one still shows the same fatal error. Could it be something with the RAM chips? Are they hard to find?

So, the EPROMs (HI and LO) on both units seem to be working fine. I guess that's some kind of good news.

I still have the "good" unit stuck in the middle of game, I think in debug mode. Any ideas on how to reset it? pressing BACK while turning it on is not working.

Well, let  me know that you think.

As always, I appreciate your input!

Thanks,

Ismenio
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Re:Tasc R30... incomplete
« Reply #27 on: May 18, 2005, 04:01AM »
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Quote from: Ismenio on May 18, 2005, 03:23AM   

Thanks Christian. I think I'll try that. I may not be able to get to it until this weekend though. I'll post my results here

Thanks!!!

Ismenio


Ismenio,

you are always welcome.
Take your time, donīt be hasty

Christian
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Ismenio
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Re:Tasc R30... incomplete
« Reply #28 on: May 18, 2005, 03:23AM »
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Thanks Christian. I think I'll try that. I may not be able to get to it until this weekend though. I'll post my results here

Thanks!!!

Ismenio
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Re:Tasc R30... incomplete
« Reply #29 on: May 17, 2005, 09:52PM »
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Ismenio,

the two Eproms which contain the software version (2.2 or 2.5) are the two on the left flank (it is written HI(gh) and LO(w) on them).

What you could do is try to exchange the program eproms of the units (exchange LO against LO and HIGH against HIGH).
By doing this you could find out whether the error is in one of these eproms.

Christian
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Ismenio
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Re:Tasc R30... incomplete
« Reply #30 on: May 17, 2005, 05:13PM »
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Mike, I tried playing with the cables and cleaning up the unit but still no go

Well, here are the pictures, if they help somehow.
First the two units side by side (non-working on the left)



Close up on the non-working board:
(You can see the mini board on top of the main one) Also, there's a little wire connecting two pins on the circuit of the little board. Not sure why it's there.



Close up on the working board:



This is the error message I get on the non-working unit, followed by a steady bleep, bleep...



Now here's a new problem. On the one that was working (kinda of!) I'm now stuck on this screen! I tried to reset by pressing BACK while turning it on but it didn't work. Also tried other keys without any result. When plugged to the board, several squares flash in what appears to be a random sequence but I have no control over the unit anymore. I can't get to the menu



Any thoughts?

Christian, could you email me telling how much you want for your extra board+pieces? Also, could I send the working unit to you, if I can get it out of the debug mode, so that you can test it for me? If everything works then I could buy your board+pieces and you could ship them back with the module. I'm negotiating something else here so I'm not sure I'll be able to conclude a quick negotiation but we'll see.

Thanks!

Ismenio
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Mike Watters
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Re:Tasc R30... incomplete
« Reply #31 on: May 17, 2005, 05:00AM »
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Ismenio

The extra small board I think is on the v2.5 and not on the v2.2? If you remember when there was a thread on the differences between supposedly similar machines I mentioned that the two Tascs I had at the time were different in a number of respects, including the boards.

The more I think about it the more I am sure that the fatal error I had was the ribbon cable being wrongly connected.

Mike
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Re:Tasc R30... incomplete
« Reply #32 on: May 17, 2005, 04:40AM »
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Oh well, I guess I won't keep my hopes high then
Thanks Christian. And I meant to say that I am not pressed for time on this so it can take as long as needed to figure this out. Any time is find with me.



Ismenio
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Re:Tasc R30... incomplete
« Reply #33 on: May 17, 2005, 04:29AM »
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Quote from: Ismenio on May 17, 2005, 04:19AM   


Also, on your last question, I was a little confused about the debug option you sent me but I'll try it again, maybe tomorrow. What do you think of my attempt and the fact that I saw the LEDs lighting up on h8?


Ismenio


Ismenio,

watch your heart! Hurry is not always healthy

The LEDīs lighting on H8 does not mean for shure that the board is working. When the Tasc plays its demo game, he does automatically lighten the LED around the squares he wants to move the pieces. But you do not have to move the pieces yourself for watching the demo game.

I encountered this phenomena before...as my first smartboard did not work (it did not recognize pieces on the whole A-Line), I entered the position setup menu (in debug mode) and I saw no numbers on the LCD field where I positioned pieces (each piece is automatically given a number). When I removed the pieces from the A-line and set them elsewhere, their number appeared.
But the LED of the A-Line worked, I could see this while following the demo game.

Photos would be nice, I could compare these with the interior of my unit.

Christian
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Re:Tasc R30... incomplete
« Reply #34 on: May 17, 2005, 04:19AM »
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Thanks Christian for all your help. Take your time on this. I'm really not in a hurry.

Also, on your last question, I was a little confused about the debug option you sent me but I'll try it again, maybe tomorrow. What do you think of my attempt and the fact that I saw the LEDs lighting up on h8?

Also, the non-working unit has an addtional small circuit board on top of the main one! The working unit doesn't have that and it looks like some kind of upgrade or a different version? 

I'll try to get pictures maybe tomorrow.

Best Regards,

Ismenio
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Re:Tasc R30... incomplete
« Reply #35 on: May 17, 2005, 01:21AM »
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Quote from: Ismenio on May 16, 2005, 12:28PM   


Christian, could you please mention that other error to Arno? Many thanks! I tried to start that one in debug mode but that didn't work.

Ismenio


Ismenio,
I just called him, but he is lying down sick and in no condition to talk much (bad cold). Iīll talk to him later this week.
Christian
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Re:Tasc R30... incomplete
« Reply #36 on: May 17, 2005, 01:11AM »
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Quote from: Ismenio on May 16, 2005, 12:28PM   

Thanks Mike and Christian!

Well, here's something: I was trying to follow Christian's instructions but I guess my brain, which is more like CC1 material than Tasc-like, is working even worse today! I couldn't quite replicate those instructions but playing around in debug mode I got to a point where it seems like it was either replaying a saved game or playing a demo game or something like that.

Ismenio


Ismenio,

which part exactly did you not understand?

The part with exchanging the program eproms or the part with going into the setup position menu in debug mode?

Christian
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Re:Tasc R30... incomplete
« Reply #37 on: May 16, 2005, 12:28PM »
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Thanks Mike and Christian!

Well, here's something: I was trying to follow Christian's instructions but I guess my brain, which is more like CC1 material than Tasc-like, is working even worse today! I couldn't quite replicate those instructions but playing around in debug mode I got to a point where it seems like it was either replaying a saved game or playing a demo game or something like that.

Anyway, I kept pressing keys and it seems like the board was lighting up the moves I was seeing on the display. So I went on until I saw the rook ok h8 move and the LEDs did light up!! So it seems the unit + board could be working after all! Now I just need to see if I could do two things: convice Christian to sell me the pieces and check if I have anything left on my bank account

Christian, could you please mention that other error to Arno? Many thanks! I tried to start that one in debug mode but that didn't work.

Ismenio
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Re:Tasc R30... incomplete
« Reply #38 on: May 16, 2005, 12:06PM »
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Quote:
The board does light up as you describe, except for the last square on h8! the last two LEDs on h8 don't light up. on g8 I can see all 4 LEds light up. So maybe I have a problem on that square?

Not necessarily.

Quote:
I can get to the menu, sub-menus and play with the options without problems.

Sounds promising.

Quote:
As for the non-working unit, I did open it but didn't see anything wrong. I'll check it again.


I think you can get a fatal error message with something like a loose connection or the ribbon cable around the wrong way. I have seen one and soon overcame it.

Quote:
I don't know that I can find someone here to help with the test. I even thought about sending it to you or Christian, of course I'd pay for shipping both ways but I know that will be expensive so I'll try to find something around here first.


Well let me know. You could always put the Tasc unit in with the MB if you run out of options.

Quote:
Also, when would you need to power the board? I see it has a place for a power adapter. Is that when you would use it with a PC?

Yep you use the Smartboard power input when you are using it with a PC. Though for me so far this is but a dream.

There must be something about collecting chess computers without pieces. Is it much more interesting? I shall have to try it.

Simple Tasc
Mike
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Re:Tasc R30... incomplete
« Reply #39 on: May 16, 2005, 12:02PM »
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Ismenio,

it could also be the enter-button you keep pressed while switching on for entering the debung-mode. I am not shure anymore...(Play or Enter), but pressing the wrong one does no harm.
I cannot find out by myself since my tasc is elsewhere.

Christian
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