[sdiy] help with uQ repair

[Julian Schmidt]

I have a broken microQ in the workshop right now.
It arrived with a scrambled LCD that only showed garbage.

after opening it up I saw someone butcher the D-Flipflop (bend and 
shorted pins)
after replacing it the unit boots again, waldorf welcome screen, os2.2, 
then preset name.

yay!

bad news is the unit immediately freezes. No buttons and encoders do 
something. :(

I tried the firmware update but on reveiving the sysex data the power 
button makes a quick flash, 4 or 5 vertical bars appear in the LCD and 
then nothing happens. Pingpong chaselight on the Inst. 1-4 LEDs and the 
message "please play back dump" or something like that in the screen.

In factory test mode all buttons, LEDs and encoders work.
Audio out test does not work (silence on all outs)
and the DSP test fails.
it only shows:

1:----- 2:----- 3:sig!

and repeatedly flashes "DSP REBOOT" every second.

So my guess is that I have a broken DSP.

Is it worth it to try and replace the DSP? they are still in stock at 
digikey.
But I am open for other ideas since I'm not keen on desoldering the LQFP144.

Best,
Julian