Re: Model 720 needs Dr. Frankenseries' help

DrFranken is out on Holiday (It's spring break around here) but I'll take a stab at it. :-)

Yes it could be the batteries. Pull them out and verify 12v each. There are four of them in two pairs. *waytoomany screws to remove but that's life, get your 7mm socket and your drill/driver! If they are weak let the fan spin for a day (charging is going on then) and see if they're better.

It could be that UPS down there. I have spares if it's dead. Not likely though, the good Dr has only blown up one. OK iGor blew one up too but hey they weren't using them like IBM says! Disconnect the short (1ft) cable from the back of the UPS to the bottom of the CEC area. If you get 220v out the PDU plugs in that case the UPS is likely OK and I'd be looking at the Power Supply for the CEC.

If it's the power supply (and I'll just bet it is) yer gonna need onea them. I have no idea how to check it. Does the thing have four power supplies or just two? Me thinks the 2061 didn't have a way to have four of them. (Remember only one is on the left side the other three are all on the right side) If there are four you can swap the top one on the right for the one on the left to see if that fixes it. If there's just one of them I got those laying around too. As I recall replacing that isn't trivial but with the drill driver it's not terrible either.

- Larry (For DrFranken)

midrange.com wrote:

What I have...
An old 9406-720, not under hardware maintenance. See also, Anchor, Boat. But, you try to use what you have lying around for $0 to make a test box.

Processor feature 2061, interactive feature 1501 and processor feature code 206B. It's the one with the "sidecar" expansion and the built in dual UPS batteries on the bottom. See http://www.usedserversystems.com/images/Used-IBM-AS400.jpg

What I know...
She's an old gal, but worked fine back in December. Found a bunch of old drives, and got V5R3 running and then unplugged her for the holidays.

What works...
When I plug in the 220V line into the power supply, the fan on the supply spins. Had the facilities guy check the power/cables/etc, everything is hot.

What doesn't...
No green glowing LCD control panel. Nothing happens when you press the big white button.

Going thru the Problem Analysis, Repair and Parts, I could have...
Bad batteries
Bad UPS/power supply
Bad control panel

Looking for any clues or tips. I can probably come up with replacement batteries, but my fear is that it is something more than that and I'd be throwing bad money after bad.

Thanks,
Brian.

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Brian Dolinar