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I'm working on a Tapper... the current problems are with the sound. 1 - Channels 2, 4 and 5 are missing when running the channel test. 2 - Several of the sounds are missing and/or cause clicking/popping. Questions: Which channels correspond to which AY-3-8910? Which sounds correspond to...

Looking for a working Tapper power supply board. Thanks.

I have a Space Fury in which all the sounds are very faint and static-y. The speech is crystal clear, but the other game sounds are not. Since the problem affects all the sounds, I suspected a problem in the final output section of the sound board. I replaced the TL082 at U1 with no change...

Ready to pay for a good G08 custom deflection chip. Help me bring a G08 back to life.

I've recently put together one of Dezbaz's reproduction 6100 HV boards. Every component is brand new except the T900 transformer. It works great for a minute. B+, measured at pin 5 of the P900 connector, starts at 180V when powered on. There's a nice picture on the screen. Pin 1 and 8...

Documenting this here in case it's helpful to anyone. All my info is from the 6100 FAQ and scouring other repair threads. I bought this 6100 HV unit non-working from Komodo. Upon power up there was no HV, and after a few minutes R925 smoked. Looking more closely, T901 was swollen and...

Looking for a complete 6100 HV unit. Non-working is ok.

Building Dezbaz's repro 6100 defelction board - questions I'm putting Dezbaz's reproduction 6100 deflection board together. I have the first of what will probably be several questions. I used this Mouser project to order the parts. I noticed that this project specifies this 100uF capacitor...

I have a cabinet I use to play both the ArcadeSD and Jrok Mylstar boards. I recently swapped the old G07 in this cabinet with a WG D9500. I had to modify the 10 pin video connector to remove the loop connecting the negative vertical and horizontal sync. So as it is now the 10 pin connector...

So I recently bought a partially working Star Castle on Craigslist, but it seems that the seller now regrets getting rid of it. I told him I would try and help him track down another one, and help him get it running if necessary. So if anyone is parting with a Star Castle, please let me know...

This is from my Tail Gunner II but it seems pretty generic...? If anyone has one like this for sale, please let me know. Thanks.

Thought I would document this in case it's helpful to anyone. I picked up a Star Castle recently on which the picture was pretty dim, even with the brightness at maximum. The tube was an Amperex M50-102W, which are notorious for being too dim, as described in the Cinematronics Vector Monitor...

I've wanted a Star Castle for quite a while now but I never see them for sale locally, until this one showed up on Craig's List about an hour away. The game plays but the monitor has vertical collapse. Should be an easy fix.

This is actually just Star Castle running in my Tail Gunner 2 cockpit. Of course it's not playable due to Tail Gunner 2's control scheme, but it might be fun to rig up some kind of portable controller to play Star Castle this way.

This G08 has beaten me. It was working briefly and now it's not, and I'm tired of messing with it. I would like to send it to someone who knows how to fix these and I'm willing to pay for the service. Arcadecup no longer works on these, and mikerk is not available due to personal reasons...

Can a polyester cap be substituted for polypropylene? Hi all, I'm trying to adjust the horizontal width on a k4900 monitor. The horizontal width coil is seized and crumbling so I don't want to mess it up any further. I was hoping I could replace the horizontal width cap with a different...

I'm hoping someone can offer their services to burn me a new ROM for the JROK multi-Williams board. According to the JROK page (http://jrok.com/hardware/wsf/Joust_under_the_hood.html) it can be burned onto a 1Meg x 8 bit EPROM eg. 27C080, 27c801 or 27C8000. The ROM file is here...

The 6100 on my Gravitar blinked out recently, and by swapping with a good 6100 I narrowed the problem down to the HV cage. I spent quite a lot of time trying to track down this problem and finally figured it out this morning so I thought I would post here for posterity. The symptom was no HV...

I'm working on a G08 on which the image is skewed to the left, as you can see on the test screen below. This monitor has been recapped, the paddle boards rebuilt, and the deflection transistors replaced. The horizontal centering pot is turned as far as it will go. This distortion is not too...

Hi all, I have a G08 monitor here on which I've done a cap kit, rebuilt the paddle boards, and replaced the deflection transistors. The monitor now produces a pretty nice picture, but after warming up for 10 minutes or so, the HV shuts off. I suspect I need to properly adjust all the HV...