The LCD has a build in led. I thought it was broken but isn't.
On the diode tester I could not measure it though.
It just needs a very smal resistor (33 Ohm) in series. not a 1 K ressitor.
Now I have light. It sure looks nice.
I have tested the switching power supply again. A 7809 an a few capacitors were used to clean the signal. The output looks clean however the transceiver produces too much spurious. I suppose the switching signal is coupled magnetically to some parts of the TRX. Anyway I can get 3 watts output power with the current PSU. That must be enough to drive an external amplifier.
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