68kMLA Classic Interface

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Performa 5200CD screen issues (flickering, calibration)
Posted by: VoraciousGorak on 2020-04-13 15:06:24 (Crossposting this from Reddit) Okay, first off, I know. The 5200 isn't the world's best computer. It might even be among the world's worst. But I've wanted one since they showed up at my elementary school in the mid '90s, and finally after almost a decade of searching I landed one. Frankly, given how it was shipped to me, I'm amazed it survived at all. It's been heavily upgraded it seems, with a 1.6GB hard drive, 64MB RAM, and Mac OS 8.5, but I think something got knocked loose during shipping. The Mac screams at me after the initial startup chime (an electronic shriek that goes away as soon as the Mac OS loading screen appears), and the screen has... issues... with some intense wobbling and misalignment. Where should I start troubleshooting this? https://imgur.com/a/3KRywU7
Posted by: VoraciousGorak on 2020-04-13 20:26:37 https://imgur.com/a/xSs0TDB I just opened the machine up and it looks like it was dropped hard enough the entire analog board got knocked out of place, and I'm assuming whatever components I'm looking at directly behind the CRT shouldn't be sitting askance. How long should I let this thing sit unplugged before messing with CRT wiring?
Posted by: SophieRose on 2020-04-15 12:06:40 I hope you manage to fix this, I have a soft spot for these performas.
Posted by: VoraciousGorak on 2020-04-15 19:43:54 I hope you manage to fix this, I have a soft spot for these performas. I cracked it open and reseated the components that looked out of whack, and it no longer shrieks on power-on! The picture is also pretty stable, but the horizontal adjust does nothing so I think that circuit is either broken or shorted. I'll be testing further this weekend; might only need a re-heated solder joint or a bodge wire to be back in business.
Posted by: techknight on 2020-06-30 03:21:03 The PCB is cracked. you need to find the fracture in the PCB, and make bodge wires to reconnect the broken traces.
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