HP Forum Archive 13

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HELP!!! HP-75C flashing dashes and dots Message #1 Posted by aam Morey on 22 Nov 2003, 12:06 p.m. For some reason when I turned on my HP-75C today the display just flashed a series of dots and dashes and then it turned off. PLEASE help me with this problem. I just purchased the machine and it was working fine until today. The problem seems unexplainable to me. Thanks. -Adam ratinacage2002@yahoo.com

Re: HELP!!! HP-75C flashing dashes and dots Message #2 Posted by Tom Sherman on 22 Nov 2003, 12:50 p.m., in response to message #1 by aam Morey Adam, Have you tried taking the battery pack(s) out and running it just on the AC adapter? The HP-75 can be powered that way without harm. If the batteries are dead (in spite of charging them), the unit may exhibit the behavior you have described, but should run OK with the batteries removed. Hope it works for you. Tom

Re: HELP!!! HP-75C flashing dashes and dots Message #3 Posted by Adam Morey on 22 Nov 2003, 1:01 p.m., in response to message #2 by Tom Sherman No, the computer does the same exact thing when hooked up to the power supply. I also charged the batteries and it is doing the same thing.

Re: HELP!!! HP-75C flashing dashes and dots Message #4 Posted by Tom Sherman on 22 Nov 2003, 2:45 p.m., in response to message #3 by Adam Morey Just a shot in the dark, as I don't know what's going on: disconnect the AC, take the batteries out, press the ATTN key once or twice, then reconnect to the AC (but without the batteries) and say some prayers or incantations when you try the ATTN again. Best of luck, Adam. Can anyone else help? Tom

Re: HELP!!! HP-75C flashing dashes and dots Message #5 Posted by Adam Morey on 22 Nov 2003, 8:31 p.m., in response to message #4 by Tom Sherman Still not working, thanks anyway man. I have no clue what to do. For some reason not enough power is getting to it. Its confusing and frustrating. Please someone help. -Adam

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