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BTW, the current Datasheet for 4861P doesn't seem to decode the part used on RP201 which is a Bourns 4861P-E41-000 and I can't find that part online anywhere. If you know what the spec for that resistor pack is supposed to be, please chime in.

I found a rotten trace and via under an almost rotten off leg of RP201. I haven't patched it up yet, but suspect this is the issue.

Thanks for the helpful tips!

I found one end of C15 was shorted to a nearby trace. I fixed that up but the symptom is the same.

I recapped a new-to-me backlit Portable and am using a Portable Battery Eliminator by @Androda. It will either display random garbage on the screen, just gray screen with backlight, sad Mac 00000014 / 0000CD38 with no backlight or nothing at all. My understanding is that 00000014 / 0000CD38...

I found the listing for Ron's disc and it says Definitely some weasel wording there. Why not just be transparent that it's a reproduction? $25, whether repro or not, is too much IMO too.

Oh ha.. I was so focused on the matching scuffs and scratches I missed the center silkscreen was missing.

What's the problem with it? Looks to be the same one in the listing photo. :confused:

I was grabbing another extension today and realized I had made one for the older compacts a while back :)

Not proprietary at all. It's the Molex KK 2139 9-position connector linked above. Pretty typical, just not as ubiquitous as the Mini-Fit Jr. They were used on the Lisa too. You'll need to get KK pins and a crimper to make your own cable though.

EDIT: I missed you were asking about the older Macs. Those use a Molex KK 2139 9-position connector. https://www.mouser.com/c/connectors/headers-wire-housings/?m=Molex&number%20of%20positions=9%20Position&series=2139 This is the info for the connector on the newer compacts: Molex Mini-Fit Jr...

I have this same monitor but mostly use it with a Quadra 950. I remember I had to tinker with a lot of different versions of the control panel to get it working correctly. I'd be interested in the manual too if you happen to find it. That cable wont be removable. You'd have to take the whole...

I clicked continue which seemed to be okay. Unfortunately the resistors themselves seem to be out of stock. I couldn't find an available replacement part. If you know of one please let m know.

@alxlab I was trying to order but got this error on the BOM / Pick and Place page Do you know what might be wrong? I followed the instructions on the readme and tried starting over, but got the same result.

A little tip: I recently needed to salvage a bunch of parts from a SE/30 including the sockets. I found an easy way to get through hundreds of joints quickly is to preheat with hot air and then start pumping. That helped clear ground plane joints as easy as all the others. The MFR-1350 is...

Normal, but significant crust and electrolyte pooling around the caps. You'll possibly need to remove and clean underneath the video muxes to clear shorts there.

I like a hoof tip for a lot of things, especially drag soldering. Bent conical can also come in handy. I also have some PLCC tips which are so helpful to quickly remove those packages. Otherwise a small chisel is great for most things.

I use a Metcal 5200 (and used a 500 for a long time). It’s the best soldering station I’ve ever experience and have tons of tips for it that are compatible with the thermaltronics systems. Just check out the Metcal cartridge catalog. There are hundreds of choices. I love the near immediate and...

Looks like C6 leaked on the EGRET which may be preventing soft power from working.

Not really. I did test a lot of stuff in the horizontal section of the analog board but didn't find any culprits. Your symptom looks the same as mine? Do you have a thread going about it already? If not it'd be great to see some photos or videos.