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Author Topic: Hantarex MTC900 Blur post traumatic capkit  (Read 2490 times)
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rom1
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« on: November 23, 2014, 12:01:12 pm »

Hi
My mtc900 monitor had recently its flyback out of service i
I had a old other one working but bad and I ordered a capkit on eBay.
I replaced all the capacitor concerned by the one supplied ones.
A colleague of me checked my work and it was ok as you can see in this first picture.


I mounted the chassis on the other tube where the other that was off.
The pict was jumping and blur.
I thought i cames from the tube so i decided to replace it to by the other which was working with this chassis.
And... same result
You can see it here :
 https://www.youtube.com/watch?v=cAwH8UjCr4o
The turnings (horizontal, vertical, neckboard blur) have no effects.
What is going on?Huh?
Could you please help me ?

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VertexGuy
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« Reply #1 on: November 24, 2014, 11:48:17 pm »

what about the flyback focus? or readjusting the neck yolk for a better focus?
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rom1
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« Reply #2 on: November 26, 2014, 08:14:44 am »

I turn the focus on the neckbeard without result.
The rings of the yoke have no action too.
A guy said me that perhaps the potentiometer of the neckbeard is out of service.
What do you think?
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French arcade collector...)
Jeutel 1 player (jamma)
Bally Old Chicago
Atari SF Rush Extrem Raciing (lcd)
Megatouch 2005
Taito crazy Balloon (WIP)
Outrun Mini
Rit Legno: Italian Neo Geo
SEGA GREMLIN Carnival
computerfixerguy
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« Reply #3 on: November 26, 2014, 11:01:31 pm »

Did you replace the flyback yet?
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rom1
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« Reply #4 on: November 29, 2014, 05:42:31 pm »

@computerfixerguy  no i did not it is on. i got an image.

So i replaced the neckbeard and then...
The image is clear and no more blured, but...
No synchronisation :-(
The tunings at the back of the chassis have no effects :
https://www.youtube.com/watch?v=kQQYM1-v4gY

Perhaps it is a problem of voltage, what do you think ?
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French arcade collector...)
Jeutel 1 player (jamma)
Bally Old Chicago
Atari SF Rush Extrem Raciing (lcd)
Megatouch 2005
Taito crazy Balloon (WIP)
Outrun Mini
Rit Legno: Italian Neo Geo
SEGA GREMLIN Carnival
rom1
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« Reply #5 on: November 30, 2014, 01:34:35 pm »

some news :
A wire between 2 cards of the chassis (synchronization inverter) was deluged.
I got the focus and a very good image, but...

As I moved the cab to his place back et restarted it : the pict is totally blured, grrrrr !
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French arcade collector...)
Jeutel 1 player (jamma)
Bally Old Chicago
Atari SF Rush Extrem Raciing (lcd)
Megatouch 2005
Taito crazy Balloon (WIP)
Outrun Mini
Rit Legno: Italian Neo Geo
SEGA GREMLIN Carnival
rom1
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« Reply #6 on: January 05, 2015, 08:46:02 pm »

I changed the tube, and the neckboard and everything is almost perfect.
Juts a trouble of width, not controlled by the good pot (RV20, pin cushion  in place of 18, width) a,d th epic is too straight.
But it is playable for now...
 Grin
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French arcade collector...)
Jeutel 1 player (jamma)
Bally Old Chicago
Atari SF Rush Extrem Raciing (lcd)
Megatouch 2005
Taito crazy Balloon (WIP)
Outrun Mini
Rit Legno: Italian Neo Geo
SEGA GREMLIN Carnival
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