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Hi, I currently have TWO monitors with flaky logic boards (one Sanwa where the adjustment controls are completly broken - I cannot find a replacement for the width control with the ferrite core component - don't even know the name :P). I also have one dead MTC Hamax 9110 board (where the...

Glad you figured it out! I've messed up the edge connector solders on 2 of 3 boards - all three times missing colors. The last round It was the video chip (which worked when I completly desoldered it and added a new one - thank God for cheap parts!).

@bandit412 What kind of NeoGeo do you have? The OSSC sync settings needs to be tuned from accepting basically 0 lag in the sync to several ns. if you use the "older" ones like the MV1FZ (got the china edition of this one). Follow the settings...

I'm from Bergen. There are a few really old school service shops around here. Will send out some emails during the holidays. I think I got the idea now though on how to adjust the H-size. I found the ferrite core rod but the plastic is all broken. So I guess the plastic just has died under heat...

Hi, Looking for stores in the EU-region with general arcade equipment in stock. Have ordered a few batches of Jammastar and is considering ArcadeworldUK, but was interested in other recommendations?

Someone know otherwise? :'( The metal coil is intact, but the internal adjustment is a total mess. Guess I'll take the board out and ask with a few of the local electronics repair shops. Might be an old guy or two still hanging around with some proper knowledge. Getting a similar case with a...

Looks like someone already broke the h-size on this one. I poked it gently with a screw driver and it looked like it was already sharded. Is it possible to get hold of replacements? I guess i need to take the board out for cleaing and damage assesment. Was hoping i could fix this without too...

Hi, Got hold of an old Danish produced arcade cabinet today with a 4 slot NeoGeo. All the labels indicate that its produced or at least fully serviced in Jan 1993. Cabinet is in a Good+ state and CRT works but it's age is shown through massive amounts of dust. One thing that is way off is the...

thanks for the info. Thought that the mismatch between the size of the cap and pcb was a sign of tampering.

Okay to reply with an answer to my own problem. Turns out this board is even more off than the special NeoGeo settings found here: http://junkerhq.net/xrgb/index.php?title=Neo_Geo_MVS Had to push the HSync Tolerance to 8.64us before I finally got a picture.

So I purchased a MVS MV1ACH from AliExpress as I wanted a front loaded NeoGeo for my multi-JAMMA arcade. The device does not seem to like my OSSC routed through Franks Minigun. A brief check with my analogue oscilloscope showed values quite similar to my working MV1C so I tested it on my B&O...

I'm using the Mingun as part of a custom built arcade cabinet and just ordered the 6 board Jamma switcher from RiddledTV to make the world a little easier. In it's final version, the cabinet will house various 1990-era JAMMA cards in addition to a PC with J-PAC card. Instead of just buying a...

@'Frank_fjs Do you have a schematic of the Audio circuitry, just trying to learn and understand how the circuitry is able to isolate the AC sound signal with capacitors. This super basic version of ebay...

Fiddled around with the THS7374 and everything points to this now. Guess I'll have to refit it -- @#$#@$

Just tested my second board with a scart doldered on to the bottom of the board. OSSC syncs perfectly but picture only displays blue. I guess that means that the blue and sync signal works. Any idea how to troubleshoot the problem?

Was meant as a feedback to the BOM list. Luckily I ordered a few extra of the SMD components as this is the first time in 10 years I do any kind of SMD soldering. Thanks for the feedback on the DuPont and and pot-levels. Did a brief test and initial adjustment. Looks really good, even with...

Photos of my primary and backup supergun build 1) Pretty sure the BOM on the 0.1uF cap Is off by one. BOM states 8 but there is 8 on front and one on back of board for a total if 9. 2) How do i trim the pots correctly. Are all values there safe for OSSC? 3) While waiting on my retrocables...

If i want to make a cable for the DIN to OSSC VGA (for RGBS signal). Do I have to make any special considerations?

Another question related to wiring. Working on the kick harnesses for CPS1, CPS2 and J-PAC. Are the ground/common points on the harnesses required, or can I just wire the "positive" button wire of the harnesses and let buttons work "automatically" though common ground on the JAMMA connector?

Thanks a lot for your help, both of you! Ended up with this.