First of all, are you sure that the board can provide 3.3v for the CPU ? If you put it in 5v, you'll fry it quickly unless you use a voltage adapter. For the jumper settings, check if the FSB is 33MHz and not something else and also make sure the jumpers are set in write-back mode (the 5x86 has write-back l1 cache so this will perform better though I don't see why it would make the computer unable to POST)

Deksor wrote:

First of all, are you sure that the board can provide 3.3v for the CPU ? If you put it in 5v, you'll fry it quickly unless you use a voltage adapter. For the jumper settings, check if the FSB is 33MHz and not something else and also make sure the jumpers are set in write-back mode (the 5x86 has write-back l1 cache so this will perform better though I don't see why it would make the computer unable to POST)

Deksor,
Not sure if the board supports 3.3v (don't know where to test that at, and I don't have any documentation on the board to go off of since I'm missing the manual, and the Hardware Maintenance Service PDF I found on the internet doesn't seem to mention any of the CPU voltages. I don't really think sticking a multi meter into random holes is going to work (or is a good idea). I do, however, see that on the top of the CPU there's two contact pads labeled "+5V" and "GND". I'm not sure what these do, as going on Trinity Works' old website on the Web Archive only mentions how to set the DIP switches and motherboard jumpers. It does state that the board should be set to "486 DX 33MHz - 5 Volts" for best performance and nothing about these leads. So does that mean that this chip is able to be used in a 5V board without the need of a voltage adapter? If that's the case, the chip should have worked before, right? Or would I have to do something with those two pads on the top of the chip? I've put the POD back in for now and it does start up, so at least I know I didn't fry the board last night when I was testing it.
I've uploaded a picture of the pads. I honestly have no idea what they do. For all I know it may be a 5V lead for a cooling fan or something, but I thought they may be of use.

EDIT: After looking some more on their website, I'm coming to the conclusion that this is a 5V CPU, since they've said to make sure that the motherboard is set to 5V, however I'm not sure if PNY changed anything on the design or "inner workings" making it a 3.3V version (just an afterthought).

I fixed it. Apparently this board automatically switches voltages, so the voltage wasn't the problem. Turns out one of the dip switches wasn't working correctly (not sure which one), but I just blasted some air in the switch holes and it works.