Recent content by Biltronix

I posted a 6100 parts list on my site some years ago. You could compare your kit parts to the list. The list includes links to new Digikey parts as an option to buy just a few bits 'n pieces. http://www.biltronix.com/arcade_electcomp_04.html Good luck, Bill B.

I was sick for three weeks, ending the week before last, so I had not been online at all for all that time. I did get a couple of emails from people who noticed my absence. VC typically posts several times per day, so yeah, pretty weird to see such a long disappearance. Several days ago, I...

While the +5V supply is used on the audio board to operate the TTL logic, it is not used by the power amplifiers at all. The transistors are not piping hot over small variances in the +5V. How loud are you playing the game? Cine/VB audio boards will certainly heat up their transistors if they...

I saw that warning tonight for the first time and frankly I was shocked. I have to wonder where the reasoning for doing that came from. I've been reading Level99's posts on the forum for a long time and I've never seen anyone ever have a problem with this member. I've bought/sold and...

I use Xeltek SuperPro 610P when I have to program PAL/GAL devices. No problems thus far. I've had it a few years now. I bought my a lot cheaper on AliExpress (I know, a bit risky to buy from there but it has worked okay). Xeltek 610P Details Device list Bill B.

At the bottom of my CinExor page, there's the original docs for the Cinematronics Exorcisor that contains lists of signature values and procedures for the various troubleshooting tests for CCPU. Bill B.

You must own an awful lot of stuff then. ;) Ah burn! I once drew my penis on my Quantum screen. Who hasn't? I could only get like a quarter of it on there though. I didn't take a picture of it to show it off in public either. Wouldn't want all you other guys to run away and cry. Bill B.

Koolzeez :cool: Mine is here. Bill B.

This device is very useful for troubleshooting Cinematronics/Vectorbeam CCPU boards and many '80s Atari game boards. At $200, it's a gift to get a good working one at that price. To fix Cine/VB CCPU boards, all you need is this signature analyzer and an Exorciser setup. For Atari boards such...

Look at this... Amp_Defl&HV_Schematic_Dez_FINAL.jpg Bill B.

Build a little test circuit on a breadboard. Bill B.

Consider it confirmed. I use MM5837 all the time. Bill B.

The laser and background sounds are each clocked by an LM566 VCO (voltage controlled oscillator). My experience is that these chips vary in frequency output quite a lot from part to part. It is quite normal to be able to hear a slight change in overall pitch in the sound when changing these...

For Coleco Gemini, how can I add a composite video and audio out? I know it's easy to install the yellow/white/red RCA jacks, but I don't know where to pick up the correct signals from the PCB. Is there a little electronic kit available somewhere with instructions that is recommended? Thanks...

$60 USD plus shipping, Paypal only for one fully working, amber DMD for WPC pinball machines. No other wiring or hardware, just the display module. I recently replaced the DMD in my 1991 Terminator 2 judgement day pinball machine with a new color LED module so I no longer need the old part but...