Hello, the second HP 01 has arrived and I have a few..

[767Geoff]

questions for the experts. I opened the back, removed the batteries and battery retention ring. I then removed the bezel and module from the surrounding case. The module retention ring was then removed (it is split on purpose to facillitate removal.

The module then came out in my hand and I put it aside. I used a blow dryer on the crystal and removed it. Two corners were chipped and there were large gouges on the crystal.

I cleaned the two gaskets and dressed the case. The stainless case looked like it had plier marks on the sides so the gouges were filed down and then the case was dressed with 300 grit sandpaper to resurface the brushed look. The bezel with the keyboard and crystal was polished to an original high gloss. I cleaned the electronics with isopropynol and cleaned the case after sanding it.

The exposed face of the crystal was to far gone for a cleaning and polishing without defacing the HEWLETT PACKARD name. Unfortunaletly to get any semblance of polish on this side I had to use 600 grit-1000grit and finally 2000 grit finished with diamet polish. I turned the crystal upside down and dressed what was the inner edge of crystal to a slight bevel. I then rounded the two corners with the chips so they had round matching corners. I have decided to use the flip it over and use it again technique and it looks alot better, even with the rounded lower corners.

Reassembly was finicky but not difficult.

The buzzer questions:

The buzzer is barely audible, where is it?
Can it be replaced or fixed?

The crystal questions:

Any spares out there?
Any one know where to get one cut in mineral or plastic
Any one got a nice case and guts they want to sell

The strap question:

It is missing the spring clip at the clasp end. this is the piece which holds the strap together and allows it to be quickly removved, Any spares????

I am going to try to match and paint the chipped parts of the keyboard with some type of melamine black paint. Melamine is extremely hard and durable enamel paint so it should last.

I was thinking about using a brown marker to fix the scratches on the keys. The preliminary experiment looks good. I will then try to fill in the engraved key symbols with white paint using a watch oiler, magnifying glass and white paint. Any ideas?

Will post pictures of the finished product. I did not photograph as I did the watch, as I was to excited to strip it down and do the work. Really should have though as the case now looks fantastic and there is a huge difference. The keyboard looks alot better and will after the paint is applied.

Cheers, Geoff

[azimuth_pl]

Great job :)
I wish I could see the entire process in pictures.
if you will do this again please try and record the process as the HP01 is just to expensive for most people to buy one and experiment.

as for a spare crystal you might get some red transparent plexiglass or buy a camera filter and cut to shape.

[767Geoff]

Your right of course, should have documented it! Best I can do is describe it as they are very finicky to reassemble with the two internal rings. And that split outer retaining ring took me a few minutes to realize it was NOT broken but split on purpose as to unscrew from the upper bezel to allow the module to be removed.

As far as the removing the module, that was nerve racking but it turns out that these are extemely tough, and well made. Should have realized that considering my 3 HP 67's and etc are all still running perfectly including card reader.

Grounded myself at the work station (I have a strap connected to the ground wire in the electrical outlet, tested and safe) but still was only happy when the module was back in place and working.

If I have to I will try the camera filter lense. Have cut them for use? The HP lense is not flat either as it tapers in thickness to the top of the case.

Got to go to work, Cheers and thanks.

Geoff