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Hi,
I bought an Amiga SCART cable from ebay, the cable works on my Panasonic G20 LCD TV from 2010 (although picture cropped on left slightly), and it works perfectly on my 21" Samsung LCD TV from 2017, no cropping and picture quality on both TV is excellent. Its made up of 9 cores + 1 ground wire, so the only ground wires connected are SCART pin 17 ---> Amiga pin 17 and SCART pin 18 ---> Amiga pin 19, and it has a 470ohm resistor on CYSNC (SCART pin 20) and a 180ohm resistor on BLANK (SCART pin 16)
I bought a 5m fully wired SCART to SCART and cut it in half, added a cut down db25 connector and the resistors as above. Plugged it into the Samsung LCD TV, works fine, no issues, great picture quality, plugged it into Panasonic and I get an issue with the picture jumps about every few seconds like it has not got a lock,sometimes when it jumps it flashes black.
I measured voltage with a mm, as my cable is 20 core with smaller wire gauge so resistance is slightly higher.
ebay cable measurements
CSYNC (470ohm resistor) - 0.484v
BLANK (180ohm resistor) - 1.430v
My cable
CSYNC (470ohm resistor) - 0.469v
BLANK (180ohm resistor) - 1.377v
Tried different resistors no difference on Panasonic
CSYNC (390ohm resistor) - 0.538v
BLANK (100ohm resistor) - 1.960v
I disconnected the 12v supply for SWITCH to see if that was causing interference, no difference on the Panasonic TV.
Wondering if anyone could assist here as to what the issue could be and what I should try next?
Thanks
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