Sega Rally 2 problem with the screens

[Hamilton]

Hi.

Since I am
new in the hobby of building and restoring Arcade games and in the beginning of
the learning curve, I would like to ask for your help.

I recently
bought a Sega Rally 2, that have been stored for a while and now needs to be overlooked,
but according to the seller was working more or less before they were stored.

Installing the
arcades, both screens (flat screens, LCD) are just showing a blue screen (see
photo). However, it seems that the signal from the video cars somehow give some
signal since there is no error message of no video input on the screens.

The arcades
are equipped with two computer monitors with converters (see photo).

What can be
the cause of the problem with the screens?

 

[tin]

Seems to me that perhaps the converters are delivering a signal - so no message on the monitors - and also that white line at the bottom - yet they aren't receiving a signal themselves. Are there LEDs and fans running etc on the boards themselves?

 

[Hamilton]

Thanks for
the help.

Yes, fans
are working, and it seems that all leads are lit, 6 greens and one red (se picture
upper right corner).

However,
the first thing that I had to replace was one of the power units (right console)
that was not working correctly. It is replaced by a Power supply unit
(computer) 450w.

 

[tin]

Hmmm... super hard to say at this juncture then!

If you have another kind of monitor that can do VGA lying around, could be worth trying that to see if there's any message (no signal/out of range or something)

Regarding the boards, I presume no sounds? but this of course could be that one board at least is still not working and the other won't start without it.

Not sure personally what else you can check right now.

 

[Hamilton]

I will try
to put on an external screen with VGA, and yes, no sound.

If not any success
with the external screen next step is go through every connection and clean
every board at the same time. This will probably take a while but every suggestion
for what the cause of the problem can be, is welcome.

 

[Hamilton]

Problem solved. Turns out that the problem with the screen was all due to a failing power supply.

I had additional problem due to the same reason. For example, one of the PCB boards broke (could, however, also have just been due to aging). Finally, I changed the power supply in both cabinets, which resulted in a more stable function. I replaced the broken PCB board, rewired the whole cabinet, fixed all hardware, changed the speakers, put on new stickers, etc. The arcade Sega Rally 2 is now placed at an arcade hall in Motala, Sweden, for everyone to enjoy.