Looked at ring lights for the camera (how to make one) and concluded it was way cheaper to just order one on Ebay as they come with a variety of adaptors and hot shoe connection etc etc. Sorta takes all the challenge out of angling the desklamp and camera just right to minimise reflections tho
So Vcc didn't improve or change when those pins were lifted?
And any variations if the chip is supplied with a good 12V Vcc from an external supply (needs to be around 12V to guarantee start-up)
Even just testing the chip with a variable supply to see if there's a threshold voltage below which RFmin's 2V reference is off would be valuable info.
According to the datasheet, the typical Icc current should never be above 10mA in operation so that's a major red flag (the drain on Vcc is killing the supply voltage)
I'd be powering the chip up from an external variable supply with all the outputs (LVG, HVG, OUT) disconnected, LINE voltage spoofed as I posted earlier, all with no mains connected for safety. Need to make that chip think it's in circuit with all valid inputs to see if it will run in some normal sort of fashion (CRO helps to monitor HVG, LVG outputs)
Need to try everything under controlled conditions. It wouldn't make sense that 2 new chips could be faulty but so far that's the way it looks :|
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