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Brettster

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Nov 20, 2016
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Leeds, UK
I have a Sega STV that boots and passes all the checks without a cart in, but with a cart inserted it displays the name of the game at the top while booting, shows the licence details then boots to a screen full of vertical lines
if I quickly press the test button it will go into the set up screen but will crash if I try to test the cart.

this has been tested with a few different carts with the same result.

anyone had this problem before?
 
I have given the cart slot a good cleaning but no change :(

are the SH2s checked during the self test?
it does pass all the checks 100%
 
Yes the SH2s often pass the test even if they shouldnt.
 
Thanks guys Re-flowing / removing and replacing worked for my board :)
did the top one in the first picture first, but no change
did the one at the bottom next and it booted to an all black screen, so tried again but still black so I removed the processor cleaned up the pads and re soldered it and Bingo!!

Thanks again for the suggestions :)
stv1.jpg
stv3.jpg
stv5.jpg
 

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