Star wars

studiopaul

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Had time to get back on my star wars project.

My board set on power up gives a garbled pulse of color.
It pulses in time with a click,, i can see the Hv LED pulse on and off in time with the colour flash on screen.
audio also cuts in randomly, after coin input.. some phrases are heard.
on power up in test mode== no bleeps LUKE TRUST ME repeats.



What i have tried so far.

I have tried another board set in the system and all works fine.
Whilst trying this..i swapped out sound card and edge cards ..which showed good results on working board set.
the board set was an Empire mod, so were unable to separate to test any further.

So i can conclude that either my AVG or my game board or both are at fault.

Any suggestions?

Looking for repair tech and or maybe a ESB kit mod.
 
Thanks dick

Any suggestions, apart from hound you until you have time to look at it..lol
and im sure an esb would be a great addition to the chip set...
 
Useful.

Although Im sending the boards out for repair, I like to learn and understand..I find it interesting as this seems to be my new hobby!!!

I found this info!!!

Place your Star Wars or Empire Strikes Back in 'test' mode and power up the
game. After about an eight second pause you'll here a series of "beeps"
and possibly some "boops" (a low pitched "beep", ok?).

A "beep" means the component tested OK.

A "boop" means the component failed the test.

There are 16 beeps followed by a pause. After the pause the pattern
repeats. The beeps correspond to the following:

1) RAM 2F/H on the CPU board (a 2Kx8 for the CPU)
2) RAM 5F on the CPU board (a 2Kx8 for the Matrix processor)
3) RAM 5H on the CPU board (a 2Kx8 for the Matrix processor)
4) RAM 3L on the AVG board (a 2Kx8 for vector RAM) ***
5) RAM 3M on the AVG board (a 2Kx8 for vector RAM)
6) RAM 4P on the AVG board (a 2Kx8 for vector RAM)
7) RAM 4L on the AVG board (a 2Kx8 for vector RAM)
8) RAM 4M on the AVG board (a 2Kx8 for vector RAM)
9) RAM 4P on the AVG board (a 2Kx8 for vector RAM)
10) NOVRAM 1E on the CPU board (a 2212 Xicor 256x4 NOVRAM)
11) EPROM 1F or 1M on the CPU board +++
12) EPROM 1 J/K on the CPU board
13) EPROM 1 K/L on the CPU board
14) EPROM 1F or 1M on the CPU board +++
15) EPROM 1 H/J on the CPU board (The daughtercard for ESB)
16) EPROM 1 L on the AVG board ***

*** The video display will not work properly in test mode if either of these
are corrupt.

+++ The self test won't run at all if either of these are too corrupted. I
Did not introduce any single-bit errors to determine for sure which beep
goes with which EPROM. If anyone knows, please let me know!


So its looks like my board has the +++ error....
bad eprom or power to.

Just thought i would share!
 
my star wars upright plays blind I think itz my hv
 
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