Looking for HP41CX Advice

[Neve]

GreyUser,

Thanks for the explanation. I knew some of this stuff, but not as in-depth as you.

My Tall-Key has already been converted to a CL (V5 board) years ago. I think it was 2017. I haven’t opened it since, nor do I plan to unless I really need to work on it.
I do remember, however, that it doesn’t have the black square epoxied drivers. But I couldn’t tell you how they were; I just don’t remember. I do know that according to the CL installation instructions, I didn’t need to add a cap, otherwise I would have. But I didn’t.

I do know that it does have bolts to hold the CPU board down, and 2 gold plated spring loaded balls are visible in the power outlet slot. The 1 and 3 keys are just fine, I the overall feel of the keyboard is, to me, a bit nicer and a touch « klickier » than my CX.
The feel of the taller keys is more positive to the touch. The drawback is that the alphabet is less visible because of the steeper angle. Not really an issue since the position of the keys became second nature, but still…
The original motherboard sports only 2 transistors instead of the 3, I think, that were present on earlier models. The unit’s serial number starts with 2027A…. MADE IN U.S.A. But it’s definitely not a very early one.
The LCD itself is ok. It’s a bit darker than the CX, for sure.
I don’t think there’s anything I can do. But admittedly, the LCD on the CX does look nicer.