bloke <firstname.lastname@example.org> wrote in message
What a coincidence, this morning I was just about to put my one back
together to get back to exploring IR remote control hacking/cracking.
Persist with that low res schematic , it is useful.
But perhaps to save you going down a false route like me, I did not realise
the large UVC3120 was the main ADC not the ZNA449 which is probably just for
overlaying ch 1/ch2 levels of Y control.
In the process I managed to make matters worse and get that cyclic relay
I removed the main processor chip VLC56C22 cleaned its pins and reinserted
and that problem disappeared. I suspect the original problem of no input
displayed , just the legends and levels was also due to surface corrossion
as that has gone , along the way
Mine is now working and I took a few scope pics of critical waveforms but
they won't be on the www for a week or more as I'm overloaded with work
If you work on the unit, [Only registered and activated users can see links. ] with polyester or paxoling the lower board
to middle board in one [Only registered and activated users can see links. ] and the front panel third in line beyond that.
But most important a 3mm threaded stud or similar to brace the lower board
to the vertical back pannel with the weight of the transformer
Do you know of a user manual without a hefty fee, as I will need to explore
the delay/trigger options and recall or pc/RS423 options.