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Problem with Vectrex screen

 
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angel.antonio

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Since: Dec 08, 2007
Posts: 4



(Msg. 1) Posted: Fri Jan 11, 2008 8:23 pm
Post subject: Problem with Vectrex screen
Archived from groups: rec>games>vectrex (more info?)

Actually must of the games work great but I just noticed that some of
them are overscaned if that is the correct term.
The vectors seem to be going over the edge of the screen (for example
I can fly my ship almost totally off the screen sides in Rip Off).
Also some games (like thrust or the test cart bin) I try to use with
the Vecflash show the starting screen fine but when the gameplay is
supposed to start the screen shuts down completely, like it is turned
off. When I press reset and try a different game everything goes back
to normal.
If anyone has any suggestions I certainly appreciate them.

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vectrexmad

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Since: Nov 26, 2007
Posts: 25



(Msg. 2) Posted: Sat Jan 12, 2008 6:55 pm
Post subject: Re: Problem with Vectrex screen [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Jan 12, 4:23 am, angel.anto....RemoveThis@gmail.com wrote:
> Actually must of the games work great but I just noticed that some of
> them are overscaned if that is the correct term.
> The vectors seem to be going over the edge of the screen (for example
> I can fly my ship almost totally off the screen sides in Rip Off).
> Also some games (like thrust or the test cart bin) I try to use with
> the Vecflash show the starting screen fine but when the gameplay is
> supposed to start the screen shuts down completely, like it is turned
> off. When I press reset and try a different game everything goes back
> to normal.
> If anyone has any suggestions I certainly appreciate them.

Screen alignment can be adjusted via the potentiometers on the logic
board - the board located at the base of the Vectrex. There are three
pots but if I remember rightly Pot. R302 adjusts the centering, and
the other two pots. adjust the screen size in X and Y directions, The
usual warning needs to be reiterated in that when opening the Vectrex
take care not to touch the other components as there is risk of
electricution even when the mains plug is removed from the wall
socket. Also its wise to use a a plastic trimmer tool for adjusting
the pots.

I had exactly the same problem with regards to using the TestCart
binary on the VecFlash. After informing Richard H about it, he told me
to put it through the patcher program that is supplied with the
VecFlash software. Using the resulting updated binary worked without
any problem - apparently some binaries aren't compatabile with the
VecFlash menu selection binary.

regards

VectrexMad!

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vectrexmad

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Since: Nov 26, 2007
Posts: 25



(Msg. 3) Posted: Sat Jan 12, 2008 7:12 pm
Post subject: Re: Problem with Vectrex screen [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Just checked the details regarding screen alignment...
There are five potentiometers in total which can be adjusted, three on
the logic board and two on the analogue board.

"Logic" board - PCB located at base of Vectrex
Pot. R302 - diagonol picture alignment
Pot. R333, R335 vector alignment/slant

"Analogue" board - vertical positioned PCB

Pot R401. - X size
Pot R408. - Y Size

regards

VectrexMad!
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