The following warnings occurred:
Warning [2] Undefined array key 63969 - Line: 275 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 275 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined array key 63971 - Line: 275 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 275 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $thread - Line: 295 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 295 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Trying to access array offset on value of type null - Line: 295 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 295 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $fid - Line: 295 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 295 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined array key 63971 - Line: 331 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 331 errorHandler->error_callback
/inc/plugins/threaded_mode.php 332 ThreadedMode::buildtree
/inc/plugins/threaded_mode.php 304 ThreadedMode::buildtree
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $theme - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Trying to access array offset on value of type null - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $theme - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Trying to access array offset on value of type null - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $lang - Line: 5 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 5 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Attempt to read property "messages_in_thread" on null - Line: 5 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 5 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks





HP48G



#3

I was about to sell my 48G to a guy in the USA, until I took it out of storage and powered it up with some new batteries. On start up, I get slow keystroke response, the right shift appearing all the time and it won't go off. The calculator takes too long to any calculations and they take longer to appear on screen. I've ried everything, including shorting the terminals with batteries out (advice from HP head office here in Australia) I'm at the point where I want to break it open, just to see if the right shift key may be stuck. I've done all the self help available in the manuals but nothing worked. I don't care if I break it because I have other units that I use. Can anyone advise a solution otherwise I'm going to take a hammer to it. I dont want to because it was a nice unit when I first got it. But I put it away for future use, just in case, but bought a 33S instead

Thanking in advance

Paul Marin


#4

Don't take a hammer to it, it's pointless. Opening the unit will bring you no closer to a solution, only closer to a pile of useless electronic bits.

Yes, it is a shorted key. A closed key is somewhere around 10k ohms. Anything from 10k up to several meg ohms will result in the behavior you are seeing. The offending key will usually be displayed with very slow response.

Try a few drops of isopropyl alcohol around the key, allow to penetrate for a second turn on it's side and press a few times. Repeat once or twice and allow to dry. An ultrasonic cleaner works well for these problems if the simple flush doesn't work.

You'll find problems of this type fall into one of two possibilities. One, it was just some crud that worked it's way into the key and it will be good as new with cleaning. Two, it will work for a while but then the problem comes back. Those you'll find to be migration of the conductive material from the top half of the switch embedding itself in the bottom cross point with each key press. Those are destined for the rubbish bin.


Possibly Related Threads…
Thread Author Replies Views Last Post
  HP48G Series Connectivity in a USB World Les Wright 3 1,458 05-06-2012, 01:29 AM
Last Post: Reth
  HP48G purchase from "that list site" Ethan Conner 2 1,248 08-27-2011, 07:31 PM
Last Post: Ethan Conner
  HP 50g - Make menus more like HP48g Brian K 1 1,017 07-18-2011, 02:43 PM
Last Post: Brian K
  Backing up several HP48G/G+/GX via HP50 Thomas Chrapkiewicz 4 1,709 02-14-2011, 11:39 AM
Last Post: Tim Wessman
  Hp48G top plastic cover bent? Luis Moreno 3 1,272 05-26-2010, 04:42 PM
Last Post: Bart (UK)
  HP48G ROM transplanted in a HP38G Thomas Chrapkiewicz 0 751 08-11-2009, 12:49 PM
Last Post: Thomas Chrapkiewicz
  HP48G Problem Jno. Greenslet 7 2,077 06-17-2009, 08:31 PM
Last Post: Jno. Greenslet
  Troubles connencting Conn4x <--> HP48G Matti Övermark 6 1,845 05-29-2009, 04:30 AM
Last Post: Matti Övermark
  SysRPL question (HP48G-series) Matti Övermark 1 925 07-24-2008, 11:16 AM
Last Post: Matti Övermark
  HP48G,GX andSX for TDS use Ian Carmichael (South Africa) 0 722 06-02-2008, 05:47 AM
Last Post: Ian Carmichael (South Africa)

Forum Jump: