Yamaha RX-V1000. Relays click. Back off right away. No panel display sometimes.

[Gringo]

Greetings to all humans!

So I'm finally getting around to trying to repair an old Yammy RX-V1000 5.1 receiver I bought from a thrift shop a few years ago, non-working. 

Symptoms:

• Press power button.  Primary relay is audible.  But, right away, it turns back off without any display or lights on panel. 
• Regarding above, it appears in some locations I've tried to power the unit, it was successful in powering up fully in a commercial building (storage facility) where I stored this for a while.  I guess it had better voltage condition that the receiver liked.  But even that, the display still seemed a little dull.  The speaker relays also clicked as well.
• Back in a residential home.  It is doing the first symptom again.  For Diag mode, however, if I hold down the "A/B/C/D/E" and right "Tuning/Preset" buttons while powering the unit, I can hear the primary and speaker relays click as if it were operating normally, but still no display (I didn't have a chance to try this in the storage unit to see if the display would light up).  If I hit the power button again, the relays all click off like normal. 

For the moment, I'm trying to see if I can hook up a monitor or TV to it to see if it is outputting anything during diagnostics so I could access the menus. 

I hope I was able to give a good description of its behavior.  I have a soldering iron as I do car audio installs, but board repairs I'm still a newbie at, but I am comfortable with attacking this issue. 

edit:  In complete darkness, in diagnostics mode, I can see the red lines running through the display, but none of the characters are lit up

[mzacharias]

Starting DIAG in the protection cancel mode:
If the protection function works and causes hindrance to trouble diagnosis, cancel the protection function as described below, and it will be possible to enter the DIAG mode. (The protection function other than the excess current detect function will be cancelled.)

Press the “STANDBY/ON key while pressing those two keys A/B/C/D/E and preset tuning (right)
At this time, keep pressing those two keys for 3 seconds or longer.
If you do not hear the relay click back off, or if you determine that the internal voltages stay ON,
you can proceed troubleshooting at your leisure.