Recent content by shenlung

Good day. Rebuilding but the resistors blown up and values unidentifiable. Can anyone snap a pic of a unit with readable color codes or let me know the proper values. I have looked at Ken's guides but he does not cover this unit. The resistors are part of the power transistor drive circuit. Both...

Use 6n137 to replace pc910 THad

Good day I am currently working on a Battlezone. After getting all the memory good, all memory tests pass with ram full on fluke. I also had bad counters in the VSM, and the VSM decoder. I can program the VSM to display a cross. Now when I put game in test mode, the cross hatch comes up briefely...

Sign me up for 2. I've thought about doing these myself

I have found dirty +5 adj pots on these cause glitchy operation which easily kills the am2901 bit slicers used on some vector boards. That chip doesnt seem to take over voltages near as well as ttl's.

Good day, looking one to build up a monitor. Used/repairable condition. thanks Thad

The cap causing shutdown C910, although I ended changing the 3 or 4 electrolytic caps in the shutdown path. I no longer blanket recap monitors, I have found it creates more problems then it solves. With a decent esr meter they are usually easy to find. I use a DER DE-5000. Well I powered on...

Good day. This monitor was shutting down sporadically. I replaced a couple caps with high esr and they were in the feedback circuit for the shutdown. Went back to location and installed and there is no width adjustment and bad pincusion. Decided to pull the whole monitor. Now testing on the...

I dont have the original. I want to use the chassis which is in like new condition on a 33 inch showcase with a good tube. Dont know original monitor manufacture. It missing chassis. The monitor works with wells chassis, but the horizontal width is narrow, the adjustment does nothing. The...

Let me know if u have one available. Thanks Thad

Tekken 5 freezes after attract or after choosing fighter. Good day, On a Tekken 5 Dark Resurrection the system 256 board was dead. I sourced a replacement in Japan for $100 plus $100 shipping. It came with a different game, and the game loaded via hard drive. After swapping in the DVD it was...

The solenoids are 120V AC 100% duty cycle, however it the mechanism jams and the solenoid cant pull in, ( This happens usually from a jam or broken bracket, failed weld etc), then the solenoid will burn up. Usually taking fuse and driver with it. On skee ball too, driver is an omron solid...

Good day I am looking for Wacky Gators, Rotted wheels ok. Thx

I was going to try making my own with some 606 bearings and some polyurethane stock from Mcmaster, if it works out the wheels will be about a $1-2. My issue is I'm missing two gator assembles also, If any one has any, let me know. The three I have are pretty beet up. Its amazing how kids can...

One thing I did determine a PP1 cpu with PP2 video, the board does not reset so I'm fairly certain problem in PP2 cpu PCB.