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| Inside watertight box of the SGC-230 near the power terminals exploded fuse and some damage is visible besides that no damage to the PCB |
This SGC-230 tuner is damaged after applying 230AC at the 14VDC connection
(wasn't me ..)
First investigation showed CPU and most IC's damaged
at least those connected to the 14VDC power
A simple 50cent surpressor could have prevented this total loss.
..
The 5V regulator and the 3 relay driver IC's destroyed by the high voltage flash .
the relays tested okay not that many chips involved but the most essential CPU is hard to get.
The SGC factory seems no longer to exist.
Looks like a total loss ...only chance to save would be a programmed CPU or the V1.03 firmware ?
Somewhere an ex employee of SGC has the f.w. resting in a drive?
The CPU is MC68HC711E9 I think she is still offered on Ebay
I hope to replace the controller with an Arduino and K3NG based software
The logic IC's are not expensive anyway I am trying to salvage this tuner.
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| the 3 driver chips,UA7805,TC7660(-5V ) removed |
Comments
misschien is er nog iemand ergens die de software op zijn PC heeft staan
anders is het wel einde verhaal
of de source code van N7DDC ombouwen....