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Old 3rd Mar 2019, 1:13 am   #98
1100 man
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Join Date: Apr 2016
Location: Ventnor, Isle of Wight, & Great Dunmow, Essex, UK.
Posts: 1,282
Default Re: Hedghog standards converter

Originally Posted by 1100 man View Post
I'm pretty confident I've not made any silly errors on the PCB:- I examined every component & joints with a lens after each component was soldered in.
Well I just knew that comment would come back and bite me on the backside!

I examined the pins of the TVP5150 with a really strong lens, concentrating on pin 9, the clock output. Pin 10 (3.3V digital supply) didn't look quite perfect and sure enough, hadn't soldered properly....

I now have a very nice looking stairstep waveform on the video output socket!

Next step will be the mod chips.

Many thanks, Frank
All the best
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