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Strange SIMM slot, can't figure out how to open them...

Problems with your machine in general.
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bfollowell
Posts: 94
Joined: Wed Oct 24, 2018 6:53 am
Location: Evansville, IN, USA

Strange SIMM slot, can't figure out how to open them...

Post by bfollowell »

I'm trying to help out my new friend in the U.K. that I adopted my new STE from. We bought 4MB of RAM from the same seller, an my buddy had never installed RAM into an STE before. I told him it was really easy and that I'd step him through it and we'd do it together. Well, he messaged me today, and his SIMM slots are absolutely nothing like the one on my new STE. I looked through all of the different board revisions on Exxos' motherboard revisions forum, and every single STE board looks to have SIMM slots just like mine, the normal ones we typically see. The one's on my friend's machine are black and have plastic nub that goes through the holes on the left and right sides of the SIMMs. He can't seem to determine how they open and, naturally, he doesn't want to try too hard in fear of breaking something.

Is anyone familiar with this type of SIMM slot/framework?

I'm attaching the picture he sent me.
IMG-2787.JPG
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8-bit - 800XL - 1050 w/Happy Mod - XF551 - SIO2PCUSB - Ultimate Cart - an assembled, but not quite 100% working  1088XEL & CF3 Dual, "new" filthy 600XL & 800XL winter repair & restoration projects, 400 restoration project
16-bit - 1040STF, TOS 1.4, Gotek - 4160STE, dual-TOS 1.62/2.06, Gotek - Ultrasatan - SF314 Drive - Golden Image Master 3A-1D Drive
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exxos
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Re: Strange SIMM slot, can't figure out how to open them...

Post by exxos »

Hard to tell much from the image. can you take some better images ?

EDIT:

I'd assume you have to push these tabs down a bit as they seem to be "hooked" though the holes on the simms.

IMG-2787.JPG
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TimNaber
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Re: Strange SIMM slot, can't figure out how to open them...

Post by TimNaber »

It might be that little wire/steel clip I circled
IMG-2787.JPG
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bfollowell
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Joined: Wed Oct 24, 2018 6:53 am
Location: Evansville, IN, USA

Re: Strange SIMM slot, can't figure out how to open them...

Post by bfollowell »

I don't think that's any sort of clip. I'm fairly certain that's the lead of a ceramic capacitor that is mostly hidden from view by the SIMMs. On my board, and most that I've seen, there are several caps just to the right of the SIMM slots.
8-bit - 800XL - 1050 w/Happy Mod - XF551 - SIO2PCUSB - Ultimate Cart - an assembled, but not quite 100% working  1088XEL & CF3 Dual, "new" filthy 600XL & 800XL winter repair & restoration projects, 400 restoration project
16-bit - 1040STF, TOS 1.4, Gotek - 4160STE, dual-TOS 1.62/2.06, Gotek - Ultrasatan - SF314 Drive - Golden Image Master 3A-1D Drive
Consoles - 2600 Vader - Lynx II
beel1
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Joined: Mon Feb 25, 2019 10:36 pm

Re: Strange SIMM slot, can't figure out how to open them...

Post by beel1 »

Hello,

I have the same on my STE (in white)
You have to push the tab circled in yellow towards the outside (orange arraw). Do the same on the other side, the the SIMM will rotate towards the rear of the STE (red arrow)
You have to start with the SIMM from the rear (U603 I guess) to the front (U601, U602, U600 in last), otherwise the SIMM cannot flip
IMG-2787.JPG
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beel1
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Re: Strange SIMM slot, can't figure out how to open them...

Post by beel1 »

Here is a view of the retention mechanism on my STE. I have to start with the SIMM on the front which is worse since there is less room that way
stesimm.jpg
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bfollowell
Posts: 94
Joined: Wed Oct 24, 2018 6:53 am
Location: Evansville, IN, USA

Re: Strange SIMM slot, can't figure out how to open them...

Post by bfollowell »

beel1, yes, that is what my STE has, and from what I've seen, probably 99% of STEs have. That's why this one seemed so strange.

Thanks for pointing out that tab. I'll pass this along to my friend.
8-bit - 800XL - 1050 w/Happy Mod - XF551 - SIO2PCUSB - Ultimate Cart - an assembled, but not quite 100% working  1088XEL & CF3 Dual, "new" filthy 600XL & 800XL winter repair & restoration projects, 400 restoration project
16-bit - 1040STF, TOS 1.4, Gotek - 4160STE, dual-TOS 1.62/2.06, Gotek - Ultrasatan - SF314 Drive - Golden Image Master 3A-1D Drive
Consoles - 2600 Vader - Lynx II
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