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#51 2014-09-20 21:36:11

techknight
Member
Registered: 2014-05-22
Posts: 449

Re: Garbled screen on portable

ouye....  I want to stick a knife in my eyes and pry them out. lol. I had to remove all the RAM chips not once, but twice. LOL....

The lesson I did learn, is the memory testing capabilities of the macintosh portable on internal RAM, is shit... It has no idea which chip is bad, or where. But I digress...

But in the end...

20140920_141151%5B1%5D.jpg?dl=0
20140920_150046%5B1%5D.jpg?dl=0
20140920_150317%5B1%5D.jpg?dl=0

There was one, yes. ONE.. bad RAM IC. Unfortunately, I dont have any replacements as I had to borrow one from another logic board just to see if everything else was ok. And it appears so. I really need to devise another way to testing the ICs more efficiently. Macs built in test sucks.

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#52 2014-09-20 21:48:44

max1zzz
Member
Registered: 2014-05-18
Posts: 207
Website

Re: Garbled screen on portable

Woohoo, i'm really pleased to see it working smile Awesome work there techknight!

You'll have to pm me over at 68kmla with what i owe you for work + that ram chip + shipping

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#53 2014-09-20 21:53:52

techknight
Member
Registered: 2014-05-22
Posts: 449

Re: Garbled screen on portable

thats just it, I need RAM chips. I had to borrow that one.

Once I secure some RAM, we will be ok.

Last edited by techknight (2014-09-20 21:57:42)

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#54 2014-09-20 22:04:11

max1zzz
Member
Registered: 2014-05-18
Posts: 207
Website

Re: Garbled screen on portable

Sure thing, let me know when you have got some

luckily 62256 ic's don't seem to be too hard to get old of (if not a little on the expensive side)

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#55 2014-09-21 11:34:15

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: Garbled screen on portable

awesome!


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#56 2014-09-27 20:21:45

max1zzz
Member
Registered: 2014-05-18
Posts: 207
Website

Re: Garbled screen on portable

Any luck getting the ram chip? Just i have all this money burning a hole in my pocket and i need to send you some smile

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#57 2014-09-27 22:48:42

techknight
Member
Registered: 2014-05-22
Posts: 449

Re: Garbled screen on portable

No i haven't sourced one, unfortunately.

if you can find one on ebay, that would be the best route.

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#58 2014-09-27 23:08:34

max1zzz
Member
Registered: 2014-05-18
Posts: 207
Website

Re: Garbled screen on portable

hmm... their 62256 sram ic's right? dosen't seem to be to many of the smt ones on ebay US

I could always send you a bunch of IC's from my RAM card (or you could even just send it to me without the bad IC, since the smt 62256's don't seem too hard to get over here)

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#59 2014-09-28 00:09:13

techknight
Member
Registered: 2014-05-22
Posts: 449

Re: Garbled screen on portable

I can send it to you fixed, But with the RAM IC removed.

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#60 2014-09-28 00:15:02

max1zzz
Member
Registered: 2014-05-18
Posts: 207
Website

Re: Garbled screen on portable

Yeah thats good with me, shoot me a pm over at 68kmla with what i owe you

Just to cheack, the ram ic is a 62256, soic 28 package, 100ns or faster right?

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#61 2014-09-28 00:33:18

techknight
Member
Registered: 2014-05-22
Posts: 449

Re: Garbled screen on portable

Take a look at the pictures above you. it shows what RAM is installed. brand and all.

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#62 2014-09-28 00:34:59

max1zzz
Member
Registered: 2014-05-18
Posts: 207
Website

Re: Garbled screen on portable

/me bangs head on desk.
Of corse it dose, why didn't that cross my mind?....  smile

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