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IIfx click then nothing

Johnnya101

Well-known member
Got my recapped PSU back. Put it in my IIfx which hasn't been started for a couple years, press start key... Click.

Had new batteries installed a few years ago. Checked them now, the right one measures 1.6 volts and the left is 3.

Guessing this is just a battery issue? Nothing turns on, it clicked once and won't do it again. No power led, no fan, nothing. Don't have any spares on hand so I'll have to order them.

Also, the only nubus video card I have currently is a toby. Will a 3 resolution vga adapter work with that?
 

Johnnya101

Well-known member
Removed the battery and tested the voltage. Reads 4.5 ish. Threw in a new battery I found. Quiet click then nothing. Power button on the back doesn't do anything. Logic board was working last time and is fully recapped. Startup circuit was patched. Still have new batteries on order, but this doesn't seem like a battery problem at this point.

Power supply? It was just recapped by Amiga of Rochester, and was tested and worked. I will note that this supply came from my IIx, because he redid this one first, but both are interchangeable.
 

joshc

Well-known member
Yeah, try a jump start:

Sounds like a problem with the startup circuit, but jump starting will verify if that's the case or not.

IIfx startup schematic:

1649224888146.png
 

Amiga of Rochester

Active member
Problem probably found. Tom from Amiga misread some caps...
As I believe in full transparency, yes I absolutely did. Two 10,000uf caps I misread as 1000. I am remedying the issue and have appropriate values on order. Thank you for your understanding John and if we're lucky this fixes your board issue...which I might test with this recapped PSU I just did for you.
 

Johnnya101

Well-known member
As I believe in full transparency, yes I absolutely did. Two 10,000uf caps I misread as 1000. I am remedying the issue and have appropriate values on order. Thank you for your understanding John and if we're lucky this fixes your board issue...which I might test with this recapped PSU I just did for you.
Thanks for the reply on here, didn't mean to make you sound bad, just wanted to update this issue on here! :)
 

Johnnya101

Well-known member
Glad it is up and running! What are you going to put in this thing?
Got a SuperMac Thunder IIgx, Radius PrecisionColor Pro XK, RasterOps image processing accelerator, Radius image processing accelerator, an ethernet card, maxed ram, dual floppies, and an scsi2sd.

Hope to do some Photoshop things with it, some aftereffects, etc. with dual monitors.

Currently installed 7.5.3 just because it's easier to get networking going so I can transfer some stuff on it, then maybe I'll put 6.0.8 or 7.1.1 on it too.
 
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