18 Jun
2003
18 Jun
'03
11:59 a.m.
Does anybody know how to fix the classic protable
Epson HX-20?
This is my part of collections, I know it's work fine before. When I tried to
switch on the machine last week, (it was after 15 hrs charged), the LCD didn't
show up and there was no response on the contrast wheel. But I still tried to
key in something, like "SOUND 10,10" and "LPRINT A", there was a beep
sound and
the text printed from the mini-printer. Then I plug in the AC adapter again
and tried to switch 'on and off' many times on the startup switcher, the LCD
worked again. At that time I thought the problem is solved.
Do you know that the battery is good? IIRC, on these amchines, most of
the logic chips run directly off the battery (which is a 4.8V NiCd unit),
but there's a little SMPSU circuit for the -ve rail for the RS232 port
and the LCD. Maybe the latter isn't starting up correctly due to battery
problems, or something.
-tony