From Newsgroup: comp.sys.apple2

I have a couple of non-working (probably just bad power supplies) IIgs CPUs. Both say on the sticker on the underside of the CPU "1989 Apple Computer, Inc."
Does the reference to 1989 mean that these are both Rom 03 models?
It looks as if the batteries, and any cages, were removed years ago. I have no idea how to get these working again. They may be dead forever, because I don't know how to solder. If anyone has any suggestions, either as to where to find replacement working PSUs, how to put a battery in these without soldering, etc. I would be very grateful.
If anyone lives in New England and works on these machines, I would gladly pay to have them returned to working order.
Thank you in advance.
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From Newsgroup: comp.sys.apple2

The ROM 3 wasn't sold until the end of 1989, so could a 1989 ROM 01 have the newer copyright on its sticker? Good question.
But there are easier ways to determine if you have ROM 3s since the computers are in your possession. GS motherboards are so easy to swap that using the copyright or serial number on the case sticker should only be resorted to if you can't see inside the case (like for example, in an ebay auction).
It should be easy to google photos of both boards, but quickly, if you see 8 identical size chips (in two rows of four) labeled FAST RAM, it's a ROM 3. If there are is only one row of four, it's a ROM 01. The battery is soldered to the motherboard with two leads on a ROM 01, but has a plastic holder/compartment on a ROM 3. I guess it's possible a ROM 3 has its plastic battery cage removed completely... But there should be no mistaking the number of clearly labeled "Fast RAM" chips on the motherboard. The ROM 01 also has the battery under the power supply near the edge of the board, while the 3 has it right next to slot 1 and the power connector.
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From Newsgroup: comp.sys.apple2

Thank you! Based on your description below, both of these machines are ROM 3. On Tuesday, April 27, 2021 at 10:58:15 AM UTC-4, Christopher C. wrote:

The ROM 3 wasn't sold until the end of 1989, so could a 1989 ROM 01 have the newer copyright on its sticker? Good question.

But there are easier ways to determine if you have ROM 3s since the computers are in your possession. GS motherboards are so easy to swap that using the copyright or serial number on the case sticker should only be resorted to if you can't see inside the case (like for example, in an ebay auction).

It should be easy to google photos of both boards, but quickly, if you see 8 identical size chips (in two rows of four) labeled FAST RAM, it's a ROM 3. If there are is only one row of four, it's a ROM 01. The battery is soldered to the motherboard with two leads on a ROM 01, but has a plastic holder/compartment on a ROM 3. I guess it's possible a ROM 3 has its plastic battery cage removed completely... But there should be no mistaking the number of clearly labeled "Fast RAM" chips on the motherboard. The ROM 01 also has the battery under the power supply near the edge of the board, while the 3 has it right next to slot 1 and the power connector.

--- Synchronet 3.18b-Win32 NewsLink 1.113