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Is simply replacing an 80MHz crystal oscillator with a 100MHz one the correct method for overclocking? Or is it just that my machine wasn’t compatible?

I have a board like this, but I got the cables to connect it with lost, so I can't use it for now. I've heard that IIfx can run at 50Mhz with this, but is there a site somewhere that has information?

I simply thought that since the crystal oscillator was 80 MHz, replacing it with a 100 MHz one would make it operate at 50 MHz. How was Dash 030 managing to operate at 50 MHz? I'm curious.

I replaced the crystal oscillator in my Macintosh IIfx from 80MHz to 100MHz, but there was no startup chime, and thinking I had broken it, I hurriedly reverted to the original, which then worked normally. Does simply swapping the crystal oscillator not work? After removing the crystal...

Since it’s one of the earliest accelerators, I think it’s understandable. If the GeminiULTRA were 50MHz, the response might be a bit different. For the past few years, I’ve been trying to make the world’s fastest Mac Plus by upgrading to a Gemini II 50MHz, but it’s not stable. Back to the point...

I considered restoring the case as well. It was heavily damaged, having been left in a junkyard for an awfully long time. Currently, I only have the front case in my possession. I thought about grafting missing parts to restore it, like reconstructing ancient pottery, but for now, it remains as...

The case it came with is also curious. While it bears the "Macintosh Plus" label, the case is smooth, unlike the textured finish typical of the Plus. Additionally, there is a recess where the Apple logo would normally be, likely meant to hold a plate. As you can see, it is severely damaged, but...

When it was powered on in the past, the Finder screen appeared, confirming it was a Macintosh 128k. However, there were no signs of the accelerator working, and the memory was displayed as 128k. It’s likely that there’s an issue with the Prodigy side, or it may not function without an external...

In Japan, some Mac magazines advertised its astonishing performance at launch, calling it "the next-generationMac II." My heart raced when I found a junk unit on eBay. According to old advertisements, a RAM failurerequires specialized RAM. This mysterious Mac Plus had it installed, but it was...

Since it was exposed to the rain, I took the plunge and disassembled it, washing it with clean Japanese water. After drying it thoroughly and powering it on, there’s no sign of it speeding up, and the memory seems to be 128k.

Does anyone know how to operate an old accelerator? I found one a few years ago when I took apart a mysterious Mac.

After all, this machine will go to the next owner. Perhaps I had a chance to replace the surface-mounted chips with Io shoes. I replaced the electrolytic capacitor. I decided that it would be better to buy another individual with the money I sold and try to repair it.

Let me tell you about my Mac screen. I think it will be cured if you replace the chip on the board. However, I have no idea which tip should be replaced. There is a floppy mark on the screen, so it seems to be cured. Do you have any opinions?

I wrote that it worked normally when I inserted the examined SIMM into the SIMM3 slot. However, the truth is that the total memory display recognized by the main unit was 4Mb. In other words, SIMM3 did not recognize the inserted memory SIMM. Should I replace UI4 and UJ4 in UJ4 from UI2 for chips...

OH! I examined the memory according to the advice. She worked fine. I examined the manufacturer of RAMSIMM. Recognized 6 out of 8 slots. Fill the remaining 2 slots to create an arpeggio. I plugged in two 256kb SIMMs at hand. I'm going to work now. This continuation will be challenged after...

Thank you for the information. Use this weekend to get the same brand with your RAM SIMM I would like to choose and fill the memory bank. Currently, I am ordering an IC near the memory bank and would like to try replacing the IC. My soldering technique is inexperienced, so I hesitate. I use...

If you replace the tip around here There is a possibility of improvement \(^_^)/ www

Thanks for the response. Memory bank A is filled with 1Mb SIMM. (It recognizes 4Mb capacity.) In that state, the machine normally displays a normal screen. However, if you point 1MbSIMM or 256kbSIMM to memory bank B, you will get an arpeggio. The logic board capacitors were recapped long before...

My name is nekogahora280. My SE / 30 has a machine when SIMM is inserted in addition to A bank I'm going to jail, but I can't identify the location of the failure. There are 4 (1Mb)SIMMs in A bank.