These were all done sequentially, 1 after the other inthe Diagnostics section.  These areexactly the same issues I was having before reseating / checking the Synth sono new problems crept in.

Removed top left, top right boards.

Removed power supply.

Reseated all connectors.

Tightened all screws.

Tightened all jumpers.

Removed keyboard.

Reseated ribbon cables and made sure they werealigned.  No tears, etc.  New face plates.

Checked for bad cables / connections.

Did not check board trace for anomalies.

Batteries are brand new.

Did not remove transformer and anything in that corner.

      Green cablefrom headphones is attached to power supply but nothing else.  Paul D. mentioned using the brown wire fromback board harness instead.  What do I dowith this cable?  Ground it somewhere?

Changed startup patch, it was going to I 10 and that wasalways weird.

Starting Diagnostics:

1) Scratch patch worked.

2) Channel enable worked on all 6 channels.

3) Tried playing with Pulse on the Oscs but it just gave"effect" - was it suppose to turn off the Osc?

4) LF D 2 - Revision 5. Poop.

5) LF D 3 - All LEDs light up.

6) LF D 4 - LED went on at max Master volume.

7) LF D 12, STOP: Did NOT try.  Already in RESET mode from before.

8) LF 10: LED lit up and it honked.  No MIDI setup at the moment.

9) LF 11: LED did not go on and I heard a click.  Had to power off / on.

10) LF 12:  LED didnot go on and I heard a click.  Had topower off / on.

At this point, heat sink is getting warmer...

11) Noticed Bank B had organ sounds which it shouldnot.  If not mistaken, it should havescratch patch because I previously did a RESET.

12) Tried to go through all of "A" Bank usingthe numbers.  Started each at A1 andproceeded through all.  Results:

      A1 - OK

      A2 - OK

      A3 - Piano?

      A4 - OK

      A5 - OK

      A6  - OK

      A7 - Honk,then went there to A7.

      A8 - Moved toG 8

      A9 - Moved toH 9

      A10 - Moved toI 10

      A11 - No LED,Click and stayed on A1 - no sound.  Turnoff / on.

      A12 - No LED, Clickand stayed on A1 - no sound.  Turn off /on.

At this point, frustration starts to set in.   I think I need to focus on adjustments orsome new part(s) in the Synth. 

This is where I ask you the questions about where to gonext.  I have done the preliminary workand am not afraid to go further, but don't know if I'm wasting time here.

13) LF A 1 - 5 seemed to work.  2 gave me a click.  5 gave me a honk.

14) LF B 1 - 6 seemed to work without issue.  

      7 gave a honkand went to flashing "F".

      8 gave a honkand went to G 8.

      9 gave a honkand went to H 9.

      10 gave a honkand went to I 10.

      11 gave aclick and went poof - locked up.  Turnoff / on.

      12 gave aclick and lit up B 1 - 3.  Lockedup.  Turn off / on.

Sheesh...  Warmer!

Press "A" 2 - 12 light up.

Press "B" 2 - 6 light up.

Press "C" and "A" stays on.

Press "D" and "A" stays on.

Press "E" and "A" stays on.

Press "F" and "A" stays on.

Press "G" and "A" stays on.

Press "H" and "A" stays on.

Press "I" and "A" stays on.

Press "J" and "A" stays on.

Press "K" and "A" plus 2, 8 - 12 stayon.

I think this sucker is bipolar.  No pun intended.  What's funny is that the presets playfine!  However many different ones I canscrape out of it, other than scratch patch. LOL!

Any ideas?

Tracy