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Hello everyone!

I was walking through downtown Toronto today and I came across an electronics store that had some 48GXs and 17BIIs for sale (they were all in boxes, no blister packs, so I knew they were older units).

There was one 17BII left; it was Indonesian from 1998 and I found the keys to be extremely loose...nothing like the older Pioneers...I guess when production moved to Indonesia, HP decided to cut the production costs even further by reducing their quality thresholds...

Anyhow, I put the 17 back and grabbed a couple of the 48s. After about 30 minutes of playing, I caved in and bought one. I could have bought one on eBay, but by the time I add shipping, duty and the exchange rate it's usually the same price as buying one here.

I played with a couple of the 48s he had there and they all did something interesting when I turned them on; for a split second after pressing the ON key, every pixel fires except for a vertical line about 5 pixels in from the right hand side. The whole thing lasts for less than a second.

Once that's done, everything seems OK; the pixels that didn't fire during startup appear to work just fine.

I didn't check all of the units, but I do remember another one doing this...is it normal?

Thanks!
B.
P.S. Once production of the 48 ceased in Singapore, where did it move to? Indonesia or China? How do the new ones compare to the older ones? I know the newer black screen is nicer, but what about the keyboard feel?

Hi;

I had an HP48G and now I have two HP48G+. I keep an HP48SX and I also have an HP49G.

Since I bought the HP48SX it reacts like this: "randomly" chosen vertical lines (always vertical) sometimes come off; if the earlier (blue-over-cyan LCD) HP48G+ is reset or master cleared, it happens something like this.

Newer black-dots LCD units (both HP48G+ and 49G) do not show this behavior so often; I remember seeing this in the HP48G when I first placed batteries in and switched it to ON. The 49G has a different startup screen.

Hope this helps.

Luiz C. Vieira - Brazil

Thanks Luis!

So how do you like your black-dot 48G+? I assume that the other 48G+ you have is cyan-dot? Do you notice a quality difference between the two?

B.

Hi, Scuba;

to be honest? I did not feel much differences, mostly because both 48G+ (you're right: one is blue-, other is black-dot LCD) are from Indonesia. Key feeling, overview quality... mostlu the same, no changes so far except for the LCD.

Serial # are:

ID02000xxx (earlier) and ID13900xxx (newer).

I use the blue-dots much more than the black-dots; I did not stop to think of it, maybe it's a way to preserve the newer for an "emergency call". I sometimes play the tests with the new black-dot so I can check for problems.

I know it's not much information, but they look so much alike it's hard to find major differences.

Best regards.

Luiz C. Vieira - Brazil

Hi, Scuba;

to be honest? I did not feel much differences, mostly because both 48G+ (you're right: one is blue-, other is black-dot LCD) are from Indonesia. Key feeling, overview quality... mostlu the same, no changes so far except for the LCD.

Serial # are:

ID02000xxx (earlier) and ID13900xxx (newer).

I use the blue-dots much more than the black-dots; I did not stop to think of it, maybe it's a way to preserve the newer for an "emergency call". I sometimes play the tests with the new black-dot so I can check for problems.

I know it's not much information, but they look so much alike it's hard to find major differences.

Best regards.

Luiz C. Vieira - Brazil

Hi Scuba,

Don't be alarmed by the LCD initialization. The "ON" pixels are simply displaying random bits remaining in the display register. It might not look elegant, but this will in no way harm the LCD.

Jeff

Hi, Jeffrey;

one thing I noticed is that if you let the 48 resting for a while before switching it to ON, chances are you'll have the vertical "traces", but if you switch it to ON right after switching it OFF, the display comes clear. The more time you wait till you turn it ON again, better are the chances the display lines "flick".

I thought this was more related to capacitive LCD characteristics, i.e., turning the unit ON and OFF quickly
would keep previous charged condition, what means no current flow when turning them ON again. Otherwise, if you wait too much time (say, a day or so), scan circuits would find discharged capacitors (LCD cells) as brief short circuits (as seen by a circuit that "expects" tens of megohms) resulting in vertical traces because of voltage drop.

What do you think? Too much brainy actibvity for such a small "flickering" LCD?

I think yours is a better explanation. Mine is too ambitious...

Best regards.

Luiz C. Vieira - Brazil

Thanks to both of you!

Yes, Luiz, you are completely correct; if you turn it on immediately after turning it off, it doesn't flick, however if you wait a couple of minutes before turning it back on, it does flick.

As for the reason, Luiz, I would take your ambitious explanations any day! I love to read your posts!

B.

... to deserve being amongst you, being amongst the best. And I think this is the place where I find them.

Thank you. Reading your words makes me think I'm not in the wrong way.

Best regards.

Luiz C. Vieira - Brazil