HP Forum Archive 09

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HP-71B dead! Message #1 Posted by James Browning on 24 Sept 2002, 8:30 a.m. I have a dead HP-71B it did work until I pulled out a ROM when the machine was switched on (accidently) Can I rectify this? Thanks

Re: HP-71B dead! Message #2 Posted by Andreas Stockburger (EU) on 24 Sept 2002, 2:32 p.m., in response to message #1 by James Browning Hi, did you try to reset (pull out batteries and shorten contacts) the machine? Are there some more cards in it ? Did you try to remove them ? Best regards Andreas

Re: HP-71B dead! Message #3 Posted by James Browning on 25 Sept 2002, 10:32 a.m., in response to message #2 by Andreas Stockburger (EU) Yes, Andreas, I removed alll cards (including HP-IL) so it is completely empty. Using batteries or using the Power supply unit has no effect and the system will not start (nothing on the LCD). I will try and short the battery contacts tonight but I'm not sure if this will make any difference! I did not know removing a ROM whilst the machine was powered on would make any difference!!!! Can you (or anybody) tell me if this is a well known issue? Thanks James

Re: HP-71B dead! Message #4 Posted by Tom Sherman on 25 Sept 2002, 2:48 p.m., in response to message #3 by James Browning James, The bad news: The owner manuals for the HP-71 do contain a warning not to install or remove any module while the unit is on. The good news (quoting from a manual): "If the computer is on while a module is being installed or removed, it might reset itself, causing all stored information to be lost." There is no warning that any real damage will be done. I hope it eventually works for you. Tom

Re: HP-71B dead.. NOW ALIVE!!! Message #5 Posted by James Browning on 26 Sept 2002, 4:12 a.m., in response to message #4 by Tom Sherman Guys Andreas was correct here - shorting the battery connectors made the system come alive again when I applied power!!! GREATTTTTTTTTT!!!!!!!!!!!!! Without this I would have probably thrown the unit away! thanks Andreas/Tom for all your help! James

Re: HP-71B dead.. NOW ALIVE!!! Message #6 Posted by John K. (US) on 26 Sept 2002, 4:53 a.m., in response to message #5 by James Browning > Without this I would have probably thrown the unit away! Feel free to use the money you would have spent on a replacement to order a set of MoHPC CD-ROMs. ;^)

Re: HP-71B dead.. NOW ALIVE!!! Message #7 Posted by Tom Sherman on 26 Sept 2002, 8:50 a.m., in response to message #5 by James Browning Great to hear, James. Enjoy the 71B. For BASIC programming, especially if trig functions are required, it is the best! Tom

Re: HP-71B dead.. NOW ALIVE!!! Message #8 Posted by David Smith on 26 Sept 2002, 12:24 p.m., in response to message #5 by James Browning Well it was such a naughty machine, you really should throw it away. Use my trashcan, please.

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