:)
Good news: I have replaced the original IR module in my SB Touch with a
new one and *now it works perfectly again*!
Technical information:
- the new IR module is a Vishay TSOP 34838, a cheap (1 USD) 38kHz
part. I'm not sure if 38 or 40kHz is best (Logitech writes 40kHz but
my oscilloscope says about 38...). I guess any IR module would work,
this one is just the one I could find easily
- the only problem with this module is that I had to cross the VCC and
GND pins. Versions with the right pinning are available, but I ordered
the wrong one
- the module ist not in an metal case like the original one, it's just
plastics
- the biggest difficulty was to remove the old IR module because of
the bad accessability and the fact that the metal case is soldered to
the PCB
- to do that, I had to remove the PCB from the back of the case. I
didn't separate the cables between the PCB and the screen
- my oscilloscope shows that there are less perturbations at the
output of the new IR module than before, but there is still some. It
seems that it's not a problem
Thanks to all for your support!
Patrick
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