Macintosh SE/30 Simasimac

[@farchie1644]

Got a checkerboard pattern on my Classic II. This technique fixed it! Thanks!

[@80sCompaqPC]

You still definitely need to recap it as soon as possible!

[@pentiummmx2294]

washing it is just a band-aid fix.

[@InitialiseDisk]

I personally prefer using a dishwasher. It basically does the scrubbing part everywhere and can’t miss anything.

[@65scribe]

A good point, though some would be understandably nervous about that option. It's good to hear that you've had success with it.

[@KabelkowyJoe]

OMG i missed that video, yet another 3 minutes of your content, yaay, better than nothing, better than to watch again every other video multiple times.. :> 65 times..

[@65scribe]

Getting close to posting a new video, but thanks for continuing to watch!

[@tetsujin_144]

1:05 - "Remove the motherboard from the computer. Simple as that, huh?" In my case, I had to remove the motherboard (of a Mac Classic) from a machine that had a clock battery explosion and a lot of metal corrosion on the frame as a result. I really had to fight it to get the corroded frame to let go of the board!

[@Stryder_The_Nite_Owl]

Remove motherboard. Remove capacitors from board. Remove components (RAM, etc.). Stick in dishwasher on a cycle. Remove and dry in a container with rice for several days to a week. Solder on new capacitors. Enjoy.

[@pentiummmx2294]

recapping is the permanent fix, you just wash off the electrolyte that is shorting out the board

[@65scribe]

That's true. I'll hopefully do a 'part 2' to this video.

[@MSNWindows7]

Yes sure, but definitely at least everyone should clean their motherboard. I've seen people just re-cap the MBs, leaving the cap juice everywhere which is just going to cause more corrosion later on or the thing to stay shorted out. Thisdoesnotcompute did that with his SE/30... never washed it: kzbin.info/www/bejne/mKXCcnSQo6-Lf9U .... bad

[@Mr.BrownsBasement]

You should mention that the old Lithium clock/P-RAM batteries that aren't supposed to leak DO ACTUALLY LEAK and will irreparably corrode the motherboard traces if given the chance. Any Mac which sits for a long time should have its Lithium battery carefully removed and taken to Toxic Waste disposal.

[@65scribe]

I was just thinking the same thing recently that I need to put that warning in a video. I will do that. Thanks!

[@Geert890]

Won't this start rusting after a few years

[@TheZcoffin]

I get the error chime on my SE/30. Could this be because I have no RAM SIMMs inserted? I also get the simasimac problem, but not sure if I need to re-cap the board or not.

[@80sCompaqPC]

No the SE/30 will not startup with no ram Simms installed. And yes you need to recap it! These old caps had a shelf life of about 15 years, and they are almost 30 years old now!

[@leetisdale8456]

Thank you for the help, hope my mac starts working

[@65scribe]

+Lee Tisdale Good luck with it!

[@leetisdale8456]

+65scribe still doesnt seem to be working... Recapped and bathed

[@80sCompaqPC]

You probably have some broken traces/vias.

[@MaxHarden]

I've heard of dish washing a keyboard but a whole board, damn!

[@Icy_vixen]

Speaking of recap, I have sent my LC II motherboard to be recapped by a specialist to add new caps which do not leak.

[@MrVitalic85]

I did wash a macpro motberboard. I use simple green and hot water. No issue

[@65scribe]

Interesting! I also had seen people use their dishwasher. I went a little more conservative than that.

[@MrVitalic85]

65scribe Not so sure about the dishwasher tho :p

[@pinealservo]

@@65scribe A number of years ago I worked for a company that built cluster-based supercomputers and got sent to be on-site for a high-profile install at a national lab. It was staged at a nearby Supermicro facility (we used their motherboards) and I learned there that they regularly used dishwashers to clean reworked prototype boards and such to get rid of flux residue. I haven't tried it myself!

[@blazingwisp]

Very useful info!

[@304volvo]

Didn't work ;-( it is like it was before

[@MrVitalic85]

ahhhhhhh. I found that oil on my macpro 1.1 memory riser. Full of these type of capacitor.

[@MrVitalic85]

smakfu Thx for the story, very interesting :) I gess I’l have some fun projects in the future when I’l have to recap my power mac and mac pro !

[@frankiii9165]

Don’t worry, I have a fully functional SE/30 so I can play… err… do serious business work at Mastertype for you!

[@65scribe]

At least YOU have a way to keep up your keyboarding skills.

[@sonicunleashedfan124]

Another fix may be ram according to this does not compute

[@65scribe]

Good tip, Eric, Thanks!

[@sonicunleashedfan124]

65scribe you’re welcome

[@aytviewer2421]

Dishwasher!

[@FireWindows10]

Fix