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HP-39GII: Will it become a desired collectible?
01-17-2015, 12:59 AM (This post was last modified: 01-17-2015 02:36 AM by Hlib.)
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RE: HP-39GII: Will it become a desired collectible?
HP-39gii inside
[Image: 43c625ead5fft.jpg] [Image: d8f94739a40at.jpg]
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In parallel to the main power supply has arisen resistance value of approx. 300 ohm, wich is continuously discharged elements. I removed some of the electrical circuit components. The functioning of the calculator is not affected, but the problem persists. Probably, a fault is in the STMP.
When the voltage on the elements 1.3 V, only a short pulse of 5 V through USB can turn it on. And when the battery indicator shows 1 charge bar, after "Power OFF" the 39gii continues to consume current around 50 mA and kills the battery.
This is only a small part among all defects in this "system-on-chip", which it was present from the day of purchase. The HP has not brought apologizing to users, but started to advertise his next "monster".
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RE: HP-39GII: Will it become a desired collectible? - Hlib - 01-17-2015 12:59 AM

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