68kMLA Classic Interface

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My IIfx progress
Posted by: SophieRose on 2023-04-15 10:11:03 I thought I'd start a thread about my IIfx as it's gonna take a while to fix with lots of photos. Today I repaired a few vias under one of the batteries.
Posted by: Phipli on 2023-04-15 11:30:15 Awesome 🙂 What's your process? I tend to visually search for damage, repair, then test for continuity... then once I've fixed everything I don't like the look of, power on and see if there is anything still not working. Then I flail about like an octopus out of water until I happen upon a solution. Based on guesswork, intuition and brow furrowing. It is time consuming, but it works eventually by sheer bloody-mindedness. Not having an oscilloscope is a bit of a frustration.
Posted by: SophieRose on 2023-04-15 11:45:54 Yep same process here too..visual stuff first.Then deductive reasoning.. 😃 what Ive got left.. if any 😂 I'm taking my time cos it's a IIfx.
Posted by: Phipli on 2023-04-15 11:54:57 Yep same process here too..visual stuff first.Then deductive reasoning.. 😃 what Ive got left.. if any 😂 I'm taking my time cos it's a IIfx. I've never even used an fx, they're quite a monster. I need to get back to my IIx sometime, I got it running after it arrived battery bombed, but it has gained intermittent video. Once I have it stable again and put metal clip RAM sockets in it, I plan to solder in a CPU socket so I can use a socket processor accelerator. I have a 33MHz upgrade meant for a IIvi waiting for it. That's my poor-man's fx plan. Sadly without the quirky hardware.
Posted by: desertrout on 2023-04-15 12:04:10 I thought I'd start a thread about my IIfx as it's gonna take a while to fix with lots of photos. Thanks for sharing! The IIFX is high on my 'want' list, love to see one being patiently restored.
Posted by: SophieRose on 2023-04-18 13:42:14 More progress.. fitted logic gates for the power on circuit.
Posted by: olePigeon on 2023-04-18 18:30:27 @Phipli They're super fast. I think probably because of the 40 MHz bus speed. It feels faster and more responsive than my 040 accelerated IIci.
Posted by: olePigeon on 2023-04-18 18:32:54 Really nice job on the repairs. Mine had a capacitor blow followed by the main 5v (or was it 12v?) trace turn bright red then curl up like one of those cheap firecrackers. Replaced all the caps and ran a nice thick bodge wire to fix the destroyed trace, and it's been functional ever since. Edit: Speaking of capacitors, while you're at it, I'd recommend a 25v capacitor for C1. That one likes to blow and leave a little crater. I'm convinced it's under rated, and when the cap become even just barely underperforming, it'll blow.
Posted by: SophieRose on 2023-04-19 07:25:02 Good tip with the caps.. was thinking of fitting 25v caps to be sure. Today I got the shielding out.. that was a job n arf 😦
Posted by: SophieRose on 2023-04-19 08:28:12 The case gets a good clean..
Posted by: SophieRose on 2023-04-20 10:23:54 Looking more complete..
Posted by: SophieRose on 2023-04-20 11:31:01
Posted by: LaPorta on 2023-04-20 11:37:18 Job n arf?
Posted by: Phipli on 2023-04-20 11:39:43 Job n arf? A Job and a half. 50% more job than a regular one. Not quite as bad as a buy one job, get another free.
Posted by: LaPorta on 2023-04-20 11:42:24 Ahhh! Looked to me like a dog going “arf!” Or something, I didn’t get it!
Posted by: Phipli on 2023-04-20 11:50:41 @LaPorta Not sure why, but you've made me think of this : Which is officially off topic.
Posted by: SophieRose on 2023-04-20 11:58:08 Yep 😂 sorry.. sometimes I type how I speak.
Posted by: olePigeon on 2023-04-20 11:59:00 @Phipli And your "Sure 'nuff" made me think of Sho'nuff from The Last Dragon.
Posted by: Phipli on 2023-04-20 12:03:57 Yep 😂 sorry.. sometimes I type how I speak. Good thing I don't or it would be all solid blocks of text with no punctuation and incomplete sentences. I apparently bail from sentences as soon as I see understanding in the other person's face.
Posted by: Phipli on 2023-04-20 12:06:36 @Phipli And your "Sure 'nuff" made me think of Sho'nuff from The Last Dragon. Don't think I've seen that. Is it better than Robo Vampire?
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