Hello, I am having problems with my Dell P1110 21" Trinitron monitor. It changes it's focus on it's own. One moment it's very blurry and the next it's ok. Sometimes it's ok only in the center of the screen, sometimes only in the corners. It's very random.
Adjusting the focus from the knobs on the FBT is not possible. I have also tried the monitor with an FBT and an A board from a working Sony FW900 but it's the same, so I'm guessing it's not the FBT or the A board.
I read somewhere that this monitor should have an auto focusing circuit controlled by an IC. I am bad at reading schematics so can anyone please help me find this auto focusing circuit and the IC?
I am attaching the service manual in case someone wants to check the schematics.
Thanks in advance!
Adjusting the focus from the knobs on the FBT is not possible. I have also tried the monitor with an FBT and an A board from a working Sony FW900 but it's the same, so I'm guessing it's not the FBT or the A board.
I read somewhere that this monitor should have an auto focusing circuit controlled by an IC. I am bad at reading schematics so can anyone please help me find this auto focusing circuit and the IC?
I am attaching the service manual in case someone wants to check the schematics.
Thanks in advance!
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