Quadra 610 “stuck” at 832 x 624 resolution.

[Ron's Computer Videos]

I have a Quadra 610 that for whatever reason is stuck at 832 x 624 resolution when using a DB19 to VGA adaptor.

I have wiped the PRAM, and tried different VGA adapters… but even when set to 640 x 480, I still, from power on, and stuck at this higher resolution.

Any thoughts on what might be wrong?

Thank you!

 

[Adam]

Resolution is set when the three “sense pins” are shorted to ground. This is what those adapters with the dip switches are doing. Maybe there’s a short in your DB15 connector or in the board that’s forcing it to 832x624 mode?