Re: Quantum help needed

That looks identical to the problems I was having with my Star Wars WG6100 monitor problem I was having. It ended up being those green X/Y block capacitors

From: William Boucher
Sent: Saturday, March 30, 2013 10:39 PM
To: vectorlist@vectorlist.org
Subject: VECTOR: Quantum help needed

I finally decided to power up my repro Quantum machine for the first time this weekend. This is a Tronic PCB that I populated last year and this is its first attempt to run. The cab is from DPtwiz and it has the repro artwork and Takeman's repro metal parts and Joe's repro harness. The coin door, power brick, ARII, and Amplifone monitor are original equipment.

First I plugged the Amplifone monitor into a known good Black Widow machine and discovered that the monitor has an minor issue that I have to take care of so I didn't use it to test the Quantum game board yet.

The first attempt to run the board failed but the P1 LED was blinking. The manual said this was caused by failed SRAM at 5D, 5E, 6D, or 6E. I swapped out these four chips from my parts stock and tried again. This time, the P1 and P2 LEDs worked as per normal. I have the game set to free play so I pressed P1 and was greeted by a nice game sound. I pressed it again and got lots more sounds and it was obviously playing blind.

Next, I plugged the Quantum video cable into my Major Havoc conversion wg6100 monitor and powered up again. This produced an image albeit quite broken up. I have not yet attempted to adjust the X and Y BIP, center, and size pots. I am not an expert on BIP and I have no idea if it can cause this sort of image breakup.

I posted a video of my troubled screen on youtube if you would care to watch it and possibly provide me some feedback.
Here: http://youtu.be/mPoVeLXvUs8

The game was playable and stable although I had much difficulty because it's sideways. There were no resets and nothing unusual happened during a 30 minute run.

Comments and suggestions welcome,

Thanks,

William Boucher
http://www.biltronix.com
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Received on Sun Mar 31 11:06:17 2013