QbertWPC
New member
Got 2 K7400s in for service.
One has had a cap kit and bad HOT replaced, put it in a game and a month later, it came back to the shop with no picture. Found it to be a bad HOT again. Have replaced it again, and this time the monitor didn't come on, and 10 seconds later the SMPS was ticking(Shorted HOT again.) I found the degaussing coil wires had been touching a heat sink and had melted insulation, creating a possible short, fixed wires, and the monitor is still blowing HOTs, even with the degaussing coil unplugged.
The second chassis I pulled from a game on location with a shorted HOT. Replaced the HOT in the field and it blew again instantly.
What do I check now?
One has had a cap kit and bad HOT replaced, put it in a game and a month later, it came back to the shop with no picture. Found it to be a bad HOT again. Have replaced it again, and this time the monitor didn't come on, and 10 seconds later the SMPS was ticking(Shorted HOT again.) I found the degaussing coil wires had been touching a heat sink and had melted insulation, creating a possible short, fixed wires, and the monitor is still blowing HOTs, even with the degaussing coil unplugged.
The second chassis I pulled from a game on location with a shorted HOT. Replaced the HOT in the field and it blew again instantly.
What do I check now?
