Vintage IBM PS/2 L40SX Bad Capacitors

Exploratory Surgery on my 2 L40SX machines. Both are dying of bad capacitors and will need recapped to restore proper operation.

[SudosFTW]

even if you don't collect PC stuff as a main thing, PS/2s are amongst the most collectible of any PCs out there.
All in all this was a very good thing you popped up on youtube, as those L40SX boards both look like they've been overdue for a re-cap for a while now. I'm gonna pass this on to at least one other person I know that has one of these in storage.

[MrMy]

Hi, i'm very glad that i found your video (and subscribed also - being a macintosh se/30, PB x 2 owner also). The thing is that i have an L40sx with a sad display (it won't really show anything visible on screen unless its set to "mono" mode in the setup) so i assume it is some issue with the inverter board. After disassembling the screen, i did notice some brownish gunk under the capacitors (more or less all six of them) similar to what you had in your video. My question is really if you remember what specifications of caps you used to replace them (i had quite the challenge to identify the original values, but i think they are: 33uf/25v (105c)
, 10uf/35v (105c) and 33uf/10v (105??). Does it sound right?

I assume (?) that they are the 7mm variety as well (??)

[uxwbill]

One of the last times I powered up my "primary" L40SX, it worked but produced a fishy smell. Oh yeah, I knew what that meant. :-(

It still works, but I don't use it a lot and should probably see to getting it fixed before it really IS too late. Would you be open to doing the repair if I sent the machine your way? (I'd gladly cover the parts and something for your time.) Same thing with my Mac Portable, but I've never seen it run and don't honestly know if it works or not...so I'm not sure if I should put any money into it.

I've seen other prototype ICs show up elsewhere in PS/2 land. My "Lacuna" board based Model 76 has a prototype marking on its S3 graphics processor.