My FB3QS going mad

[epyn]

Hi Photon Lovers!
Today after a little maintenance just powered up my Projector,and my scanner output wasn't like before.
Both galvo's performs the same,means:
if they scanning a box,or any figure,i get a line like this:

this line is from this cue

So,my FB3QS is do the same on each scanner output? (XY)
I'd try everything,checked the cables,swap the connections,the PSU is good,the QS is in the default settings.
I really don't know what is this strange thing...

[epyn]

Oaky
I'm sorry for unnecessary moan.
I swapped the soldering on the balanced input.
Problem has solved.I'm gonna delete this thread.
Ferenc

[Things]

I had this same issue once before too. Somehow removing the DMX board (Which the FB3QS doesn't have) fixed it. A couple years later I put the DMX board back on and it works fine - so no idea what went wrong.

[White-Light]

Just for reference, the Fb3 performs a system check at start up and displays a slow flashing yellow light if something is wrong.

If you don't see that, then the problem is usually elsewhere.

[Humphry]

The same thing happened to me and it turned out to be the cable. No idea what was wrong.
What does swapping soldering mean? What did you connect differently? (Sorry if I am being daft)

[epyn]

What does swapping soldering mean?

I just swapped the soldering joints on the projector's DB25M at X-Y points.
All positive signal (X+Y) gone to the balanced X axis' joints,and all negative signal (X+Y) gone to the Y axis' joints...
My galvos amps got the same signals,just they were in different phase
I was lame or just tired.
My DAC works properly.