help with STFM 4MB SIMM ADAPTER KIT

[palutti]

Hello, I recently bought a STFM 4MB SIMM ADAPTER KIT and once mounted I have the following problem



I get this lines screen

to find where the error is I will need your help

Is it correct where I have welded the positive right leg of the capacitor? in the exxos website manual it is not clearly seen in the photograph



also from point D2 to point 0V I have continuity. I have tried to scratch the copper from the point where the drilled hole is, but I still have continuity.
It has something to do, that the PCB is mounted? Should I have measured the continuity with the PCB before mounting it?






Any help that you can provide me I will be eternally grateful

[exxos]

Bad solder most likely.

The RAM PCB is labeled up where the pins connect to the MMU etc. Then you can check with meter they are connected. Pinouts and schematics are https://www.exxosforum.co.uk/forum/viewforum.php?f=31

[palutti]

what about continuity between D2 and 0V, is it normal?

[exxos]

what about continuity between D2 and 0V, is it normal?

Nothing should be 0V other than 0V itself.