Toshiba P503SGA Monitor went dark

Dragon333

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I have a Sega Water Ski game that has a 50" Toshiba P503SGA monitor.
I had not used it for awhile and when I went to turn it on I can hear the game playing and the topper lights up, but now the monitor no longer has a picture. I am just learning about arcades and I am a novice especially when it comes to electronics. I can't see any fuses burned out, but also I can see that none of the three color lamps are lit inside the rear projection monitor. Does anyone have any suggestions on what might be wrong or what to start checking out. Any help would be greatly appreciated, thanks for your time.
 
I have a Sega Water Ski game that has a 50" Toshiba P503SGA monitor.
I had not used it for awhile and when I went to turn it on I can hear the game playing and the topper lights up, but now the monitor no longer has a picture. I am just learning about arcades and I am a novice especially when it comes to electronics. I can't see any fuses burned out, but also I can see that none of the three color lamps are lit inside the rear projection monitor. Does anyone have any suggestions on what might be wrong or what to start checking out. Any help would be greatly appreciated, thanks for your time.

The convergence boards are tough to keep working on these. There are convergence ic's(should be 3 of them) that could have went bad and could cause I blank screen from what I've heard. Some would insist on throwing an LCD in there (I've seen this done on an ocean hunter and it just looks like garbage), I would insist on trying to fix it. Beautiful thing about projections is that if you get a toshiba from around the same timeframe, you can use those lamps to replace any that might have burned the image into the screen. I believe you can use the convergence chips as well. Always check the fuses first, wiring and connectors as well as fuses. Do you have the remote control for adjustments?
 
Thank you so much for your quick response and for trying to help.
I do not have the Toshiba remote.
I can see the fuses in back to the game itself and they all look good, but are there fuses that are somewhere inside the monitor?
I'll go back and check the connectors. I thought maybe because this game literally requires players to jump up and down on foot pedals that maybe something got jarred and disconnected from the game to the monitor.
Thanks again for your time.
 
Thank you so much for your quick response and for trying to help.
I do not have the Toshiba remote.
I can see the fuses in back to the game itself and they all look good, but are there fuses that are somewhere inside the monitor?
I'll go back and check the connectors. I thought maybe because this game literally requires players to jump up and down on foot pedals that maybe something got jarred and disconnected from the game to the monitor.
Thanks again for your time.

When you open up the monitor from the back, there should be 3 boards if my memory serves me well. There are most likely fuses on those boards but I can't remember at the moment. I do have the manual I can look over with schematics that I can scan for you...just let me know. The remote is needed to reconverge the colors once you get it going. Each lamp has adjustments on them too, but the remote fine tunes it. Where are you located? Thanks
 
I see three fuses on the bottom back game floor, but they are not on any boards. Wires from them lead to boards, but they are not actually contained as part of any boards. Two fuses are side by side and one is by itself. They all still have their inner filaments intact.
I do see two green boards what I assume are two pcb boards, one smaller board on top of the other, along with a completely smaller separate green board.
I have the schematics in the owners manual, but I only understand how to read it a little bit - sorry. I'd appreciate you looking at it for me, if you think you could guide an amateur such as me.
I live about 30 minutes north of Pittsburgh.
I will look on line to see if I can find a remote to purchase. Thanks again!
 
I see three fuses on the bottom back game floor, but they are not on any boards. Wires from them lead to boards, but they are not actually contained as part of any boards. Two fuses are side by side and one is by itself. They all still have their inner filaments intact.
I do see two green boards what I assume are two pcb boards, one smaller board on top of the other, along with a completely smaller separate green board.
I have the schematics in the owners manual, but I only understand how to read it a little bit - sorry. I'd appreciate you looking at it for me, if you think you could guide an amateur such as me.
I live about 30 minutes north of Pittsburgh.
I will look on line to see if I can find a remote to purchase. Thanks again!

Pittsburgh is a bit too far for me, but I can attempt to help from here. Check your BNC connectors (r,g,b) leading into the bottom front of the projection, and the power cord. Reseat them and see if that helps. Also, do you own a multimeter with continuity beeper?
 
It Worked!!! Thank you so much for taking the time to help me. As a real amateur I didn't think I had any hope of fixing it, but you got me through it. I learned a lot, at least for me.
I tested the AC connector at the bottom front of the tv with a continuity tester (power was there) and then reconnected it like you said, blew all of the heavy dust off of the inside tv circuit boards, checked five fuses I found on the tv boards (all were good) and then reseated them. I then plugged the game back in and low and behold the picture reappeared and on top of that it looks better than ever. I am not sure which item was the real culprit (maybe you have an idea?). Hopefully it doesn't happen again, but "WOW" you really made my day! Thank you, thank you, thank you …..!
 
It Worked!!! Thank you so much for taking the time to help me. As a real amateur I didn't think I had any hope of fixing it, but you got me through it. I learned a lot, at least for me.
I tested the AC connector at the bottom front of the tv with a continuity tester (power was there) and then reconnected it like you said, blew all of the heavy dust off of the inside tv circuit boards, checked five fuses I found on the tv boards (all were good) and then reseated them. I then plugged the game back in and low and behold the picture reappeared and on top of that it looks better than ever. I am not sure which item was the real culprit (maybe you have an idea?). Hopefully it doesn't happen again, but "WOW" you really made my day! Thank you, thank you, thank you …..!

Awesome! Glad everything worked out for you. Should be noted that I've had that same model refuse to power up time and time again, but will other times....kinda works when it wants to. If you are happy with the picture quality, go no further. But if the convergence goes out of wack, watch this video. In it, you will learn tons of info on how to repair that model. Good luck, and if you need further assistance, just come back on here or pm me.

Link to video on convergence:

https://www.youtube.com/watch?v=xi3L42YahMA&sns=em
 
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