SNK Jamma board rom sockets (SVC Chaos)

[tiff_lee]

Does anyone have any details on the sockets used for the smd rom chips on the 'MVS' jamma boards?

I've got a 'faulty' board which has the locking tabs broken on one of the socket 'lids' and so there is insufficient clamping pressure (pushing down on the chip with your finger solves the problem). Looks like someone has previously tried to bodge it with superglue/epoxy as it was all over the pins.

I've googled the chip details but come up short so no idea if I can buy a replacement socket, other wise i'll probably have a crack at 3D printing the top piece or at least just the clamp section. (also going to have another go fettling the contact pins to see if I can make any improvements there)

 

[chacal231077]

Hi!

I advise you to clean the welds of the socket well and to put a few drops of UV resin, to re-seal the valve

Quick-Drying UV Resin Glue Clear Hard Resin Glue

and UV lamp 395nm.

 

[tiff_lee]

Actually that's probably what was used before by the looks of it, i had to chip/scrape it out of the socket using a dental pick.

Yeah ok i'll give that a go. The socket does look like it should have small latches/clips either side at the end opposite the pivot/hinge that are broken off but with a little packing and pressure applied that glue may well hold.

It really is a weird setup, surface mounted socket for surface mount chips. Not sure if these were installed to expand the use of the boards, otherwise why not just surface mount the chips in the first place.