HP 41C DOES NOT BEEP
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08-30-2014, 05:31 PM
(This post was last modified: 08-30-2014 05:39 PM by aurelio.)
Post: #9
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RE: HP 41C DOES NOT BEEP
(08-30-2014 04:46 PM)Mark Hardman Wrote:Hi Geoff, hi Mark, the halfnut is really a 41c (63 registers) and I've checked for the serial it was made in the 82 year , 35th week, in Singapore (2235S4XXXX).(08-30-2014 04:13 PM)Geoff Quickfall Wrote: Pictures of the serial number and more pics of the board with the black cover removed would be interesting. Geoff, I could send you pics in the original size (not formatted for the forum) but I think you need to see the rear of the board and I'm a little scared in removing it Somebody knows the IC in place of the half-board? I think maybe the "beep" missing could be due to a cold soldering, I added a magnified pic of the board and it seems the upper point could be one of those. Actually I'm half-happy of the "sickness" of this beauty, otherwise never I was going to open it and find what we see |
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