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I'm just guessing it's just the small PLCC chips not properly soldered in place. They look it, but it's tough to tell with the pads underneath the IC. Yesterday I touched up UN9 and when I pressed the power button I at least got a louder static sound from the speaker. So some progress.

I checked the ROM socket to the CPU socket and all the data and address lines had continuity. So this means it is not what I suspected as a ROM issue. I will again go through the IC's and check my soldering (again). I plan on removing one IC at a time and checking, hoping for a death chime at...

Thanks for responding. I really don't think it's an issue with the Sound IC's, but with the ROM. When I say doesn't respond to reset, I have no sound and no response that it's rebooting. To me this is as if there is no ROM or incorrect ROM SIMM installed. I've had this happen when I have...

I don't believe the issue is my soldering. I have checked and rechecked all the IC's especially the PLCC chips. All have continuity from pad to top of the pins. I can only guess that during manufacturing something wasn't connected within the layers. Odds of two boards exhibiting the same issue...

I have been trying to resurrect my battery bombed Mac IIfx boards (I have two) by transferring everything to Bolle's recreation boards. I love these, but I am having a no boot, no chime on the board(s). Reset doesn't respond. I've checked and rechecked my soldering. I've got continuity from...

I know it's an issue with the GALs or programming them. I thought maybe a socket would work since I have seen the new board that is being prepared is using sockets. I just wasn't sure I had soldered the pins correctly (even though I had checked the pins and the pads for continuity). Still...

Thankfully I have a extra Mac IIfx board. I am going to power it up and check voltages and match what I have on the recreation board. I am not getting any viable voltages on UN10, the 120 pin Memory Controller IC. Or maybe something isn't starting it up and that is why it doesn't have any 5v...

I added the jumper to be able to boot from the power button. I'm still getting a no boot chime, no video. It kind of reminds me of booting without a ROM SIMM installed or no RAM. I checked the back of the board and found one pin not soldered on the ROM SIMM and a whole row of pins not...

Bolle, thank you. That is really helpful. I did not add any of the ATX items because I am using the stock power supply. But that would explain a lot. I am getting no response when I press the reset buttons. Possible it is the Sony Sound IC's? The Audio out plug? I did find a few pins that...

I built my first recreation board and am having trouble booting at the moment. I didn't expect to get a first successful boot on my first try. I am getting no boot chime and no video. I am also not able to boot from the power button, but I can jump it. It does shutdown with the power button...

Not yet. I did buy some PLCC 20 pin sockets for the GAL chips. I also bought some Motorola 68030 25Mhz chips. The last time I tried, I was getting a checkered screen. I am hoping the new sockets to insure proper solder joints and the new CPU will help. I also read a bit more on programming the...

I ordered the boards today from JLCPCB. I have two battery bombed boards I will be using as parts boards. Should be a fun project.

Recapamac is the best resource for the vintage Mac capacitor info. https://recapamac.com.au/macintosh-iifx/

Thanks. I spent this morning checking continuity and all is confirmed with the schematics. The only thing that is incorrect that I have found is with UG1 pins 11, 13, 15 & 17 don't go to RP7, but go to RP8. I also have a battery bombed Mac IIx board and double checked. UG1 Pin 11 goes to RP8...

Bummer, I have continuity on UC7 pin 6 to RP4 pin 14. i must have a different broken trace. Still looking. I've had other repairs I've been working on, but I will pick this up again this week.

If you have not already recapped the analog board/power supply that would definitely be your issue. I would also check the solder joints and reflow all the pins that have a connector cable that plug into. Since you have it open might as well clean and re-lubricate the 400k floppy drive. Best...

Nice.

Progress today. I have a steady green light. Previously I wasn't getting 24v anywhere on the printer. I 68kmla member Joe Ventura provided me with a replacement AC Power Block and I purchased a replacement DC Power Supply and the printer finally woke up. On startup the printer attempted to...

Thomas will do a great job.

Unsure where you are located, but Amiga of Rochester (NY) does great work and specializes in recapping and repairing vintage boards. The price you were quoted will be just the recap, not for any unseen issues. Since you haven't opened it up yourself there may be other problems, including PRAM...