Included tags: Voltage regulator ×
Excluded tags: None

Commodore 8250 disk station making loud buzzing noise

VCFed about 3 months ago

Hi all, I got a Commodore 8250 disk station last weekend. It's working mostly fine, but the drives needed some service and I removed the filter cap after it blew up on me. (I looked for Rifas, didn't find any and thought I'd be safe - I was wrong! It stan …

Why did SNK keep making 5v AES systems?

Neo Geo Forums about 3 months ago

My understanding was that SNK added a daughterboard with a voltage regulator to early models in response to people plugging in a wrong AC adapter and frying their consoles without the regulator built in. Later AES revisions incorporated the voltage regulat …
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Help & Support • 1541 drive—need help diagnosing failed component

Lemon64 about 6 months ago

Hi all,I have a power issue on my drive and haven’t found a definitive solution online so decided to post the details here. I’m troubleshooting a 12v issue. At power up, drive lights come on as expected with the green led staying lit and the red led c …

Commodore PET voltage regulator replacement

VCFed about 9 months ago

Hey! I have a Commodore PET which's voltage regulators are faulty. As I've desoldered both of the pins of the broken regulator, I have encountered that it is additionally mounted with two "metal pins"? Unfortunately I don't know how to unmount it …
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Mods for "Mean Well" Switchmode Power Supplies to power unmodified Apple-1

Apple Fritter about 10 months ago

Dear Fans - My voltage increasing mods for all four candidate "Mean Well" switch mode power supplies ("SMPS") to power the unmodified Apple-1 announced in the old thread: https://www.applef... …
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Other 8-bit Commodore computers • Dead Commodore 16 but not black screen - wavy lines instead

Lemon64 about 10 months ago

Hi all, I’ve bought an ‘untested’ Commodore 16 from eBay fully knowing that it would actually have problems, and indeed it has. Apart from the fact it was filthy and had no PSU, the board was pretty good. However, when using a modern 9v adaptor with …
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General Old Hardware • Asus P/I-P55T2P4 does not work and throws memory errors

Vogons about 11 months ago

Greetings to all,I recently acquired an Asus P/I-P55T2P4 v3.10 motherboard equiped with a Cyrix 6x86L-P200+GP CPU but no RAM.I bought 5 pairs of EDO stick (16 Mb and 32 Mb). I put a PCI VGA card (ATI Rage XL) and fired the mobo up.Of course, the CMOS batt …
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8-bit acorn hardware • Electron Accelerators Thread

Stardot about 11 months ago

There seem to be several attempts to produce fast Electron accelerators on the go right now, which does probably deserve a thread.I've been posting snippets about my effort on Twitter mostly, but finally got round to writing some actual details.Some of yo …
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12V Power supply conversion using a Mean Well RPT 60B

Apple Fritter about 11 months ago

A friend approached me to rebuild his Apple II power supplies. One was a clone and one was an original. The original was already in pieces when I got to it, with components desoldered. The clone was very similar to the original Apple PSU, but cheaper and f …