Monitor problem?

MNLonnie

New member
Joined
Dec 27, 2009
Messages
10
Reaction score
0
Location
Baxter, Minnesota
I just bought an Atari Race Drivin' game. When I picked it up it worked good, we played a couple games on it. When we got it home the monitor does not come on. I don't see any wires that came loose and there is power going to the monitor board. We hauled it in the back of the pickup and used a tommy lift tailgate to raise and lower it. Any ideas?
 
Do you know what monitor it is? If it is a K7000 the flyback may have gone out. It happens and replacing the component is not too difficult.


Can you get to the monitor with it installed and powered on? Can you test for power on the large white ceramic resistor on the side of the board?
 
There is a sticker that says model 25K5515. There is a white resistor on the left side looking from the back that is about 3/8" square by 1 1/2" long and I don't have any power to that. Is there a fuse on the board somewhere?
 
That is a K5500 monitor. There is a fuse on the board, I think it is near the back of the board but it has been a long time since I looked at a K4900/5500 chassis.
 
The fuse was bad so I bypassed it with a good fuse and it's holding but I still don't have anything at the ceramic resistor.
 
The fuse was bad so I bypassed it with a good fuse and it's holding but I still don't have anything at the ceramic resistor.


Something caused the fuse to blow. Most likely it was either the VR or the HOT. 4900/5500 chassis rarely blow flybacks, though it does happen. I have also seen cold solder on the chassis transformer cause similar problems. You need to pull the chassis off and test the circuitry. Also, retest the new fuse with a meter to make sure it is not partially blown.
 
Question about the heavy wire that hooks toward the top of the monitor, how does it unhook and also where it hooks up to the board it looks like it got hot and a little melted.
 
Question about the heavy wire that hooks toward the top of the monitor, how does it unhook and also where it hooks up to the board it looks like it got hot and a little melted.


I am assuming you are talking about the anode cup. It has two opposing hooks that hold it in place. I usually use a flat tip screwdeiver to push one hook far enough back to release it from the hole. You need to be careful with that connector, it supplies the high voltage to the tube and can retain a charge sufficient enough to shock you if you do not ground out the anode before attempting to remove it.


If that wire is damaged you may want to replace the flyback. The Arcade Cup carries the 4900 flyback, I don't know if he has any 5500 flybacks available.
 
Back
Top Bottom