🚀 go-pugleaf

	As my previous posting suggested, I have the following problem:

	I had decided to change the power supply on my IBM-PC XT. I went to a 
        local computer store (Delphi Compyters and Peripherals in Greenlake for
        the locals) and bought a 150W power supply that says it is meant as a 
        replacement for XTs.The catch:
        I couldn't change the power supply without dislodging the hard and the 
        floppy drives. Mine has one of each (D: and A:). There were some 
        problems, but eventually I got the right connections and it started to
        work. When I put the cover back, the thing won't work. It gives (an
        error message I suppose) the following after whirring for about 20
        seconds)....
	1) Displays the message 7055 201 (yes, there's a space in between)
	2) Beeps at you after some more time
	3) The floppy drive keeps rotating till you power down. Read, it does 
           not recognise a DOS diskette (same version) in drive A:. It used to
           just a day ago with the same symptoms. NOTHING ELSE TO REPORT.
	TRIES : I tried disconnecting the cables leading to drive A:, keeping 
                the one on drive D: Result?
                7055 201
                601        (presumably, dirve a: missing/not ready message..)
		Now drive A: does not spin but an I/O is attempted on drive d:, 
		I can see the light go on and THEN SILENCE. Sometimes the 
                monitor is screwed up after a while.

		I disconnected both drives A: and D: from the main(?) board. 
                Now I get
                7055 201
                FATAL DISK ERROR
                DRIVE NOT READY
                601
                After a while it goes into BASIC. (says 62940 K memory)

Sorry if the details are boring but I have tried my best to solve before asking 
once again for NET WISDOM :(

CONFIGURATION :
            IBM PC-XT 8088 W/ ONE HARD (D:) AND ONE FLOPPY DRIVE(A:)
            * LOW-LEVEL FORMAT USING DISKMANAGER JUST A FEW WEEKS AGO.
            * SEA GATE ST225 20MEG HARD DRIVE WITH XEBEC CONTROLLER.
            * UPWARDS OF 6 YEARS OLD.
            * ORIGIN OF PROBLEM : ATTEMPT TO CHANGE A 63.5W POWER SUPPLY
                                  TO A 150W ONE.
            * LOADED WITH TONS OF BOARDS. I AM NOT EVEN SURE OF WHAT IS WHAT
            * HAS CGA AND MONOCHROME MONITOR

	Thanks. e-mail is probably appropriate. I do read the net. 

Can ANY KIND GURU let me know where all these messages are documented? I don't  
speak  binary or HEX   and this is frustrating.  What manual, I assume there is 
documentation, has explanations for these strange numbers and is there a 
troubleshooter's guide?	I have tried looking into the DOS manual. NO GOOD. The 
technical ref. seems to written for those tortured souls who understand 
gibberish.

					fischer@milton.u.washington.edu
				Also    fischer@toby.ucs.washington.edu(BITNET)