Then, using a toenail clipper (flat part) you can pry apart the two halves near the battery compartment (i.e. Since they are heat fused, just "cut" the plastic bond along the inside of each rivet hole (do not destroy the rivet itself). What I do is use an exacto knife to loosen these four rivets in the battery compartment. Four more are located toward the bottom of the calculator. If you remove the battery cover, you can see four of them, a pair on each side of the battery compartment. In response to message #1 by mark rumreichĪnother method is to actually open the calculator via the rivet points. Message #2 Posted by Han on 19 July 2006, 2:26 p.m., Re: hp 32s repair - dead right column of keys True, there is a little hole in the back, but I just put a sticky label over it to keep dust out. Also, your case will be stronger when you drop it, if you don't have to cut the plastic rivets and pry it apart. I read in your forum where some people had luck using an ultrasonic cleaner, but I don't have one, so I tried this. I just twisted the tab a bit and then tested the keys, stopping whe it was enough. I only had to twist the tab 1/10 of a turn or so. My model is one of the newer units with a single sided PCB with no mylar or foil to be concerned with. I was going to use a "Moto-Tool" to carve a hole, but was afraid the dust would do additional harm. Use the hot tip to carve the plastic away, and trim any flashing with a flush cutting diagonals. There is a tab on the left symetrically located, as well as one in the center. I then inserted a needle-nose pliers into the hole, twisted the tab a little tighter and the calculator now works like new!įor problems near the right side: the tab is located 97 mm from the bottom and 11 mm in from the edge. I used a soldering iron to melt open a small (5 mm dia) hole in the back just over the twist tab near where the pressure solved the bad key problem. The PCB is fastened using twisted metal tabs. Since I didn't have much luck opening my first unit, I decided to use precision surgery rather than opening my second one. If that makes the right row work, there is probably a bad connection between the keyboard and the PCB. This fix may be applicable to you if the following test works: If the right row of keys (+, -, x, etc.) doesn't work, try squeezing the bezel below the display and just above the 1/x or E+ key: gently pinch the back of the calculator to the front of the calculator. Since I can't find a new 32SII, I tore my first one apart and made some observations that allowed me to fix my newer one. Message #1 Posted by Tom Brentnall on 8 July 2002, 5:12 p.m.Īfter my second 32SII lost the use of a column of keys, I figured there must be a weakness (probably mechanical) that might be able to be fixed or cleaned. It worked! Time will tell how long this will last. I decided to try gently twisting the calculator body back and forth to see if I could restore good contacts at the internal keyboard connector. One day my HP 32s developed exactly the problem described by Tom Brentnall (orig post copied below) - dead right column of keys. Message #1 Posted by mark rumreich on 19 July 2006, 10:53 a.m. Hp 32s repair - dead right column of keys Hp 32s repair - dead right column of keys The Museum of HP Calculators
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