Re: Dell P1110 21" CRT repair thread
Start by checking the mains fuse. If the fuse is blown, check the main switching transistor, it probably failed shorted. It doesn't go on its own - so check the capacitors too, one or more could be bad.
If the fuse isn't blown and the transistor looks fine check the controller IC in the power supply. Btw, if the main supply runs but seems to be in protection mode (listen for a ticking noise), check the HOT (horizontal output transistor). That is by far the most common part to fail in CRT monitors.
The service manual is pretty easy to locate and the schematics are very detailed so troubleshooting should be straightforward. If you can't find it i'll upload it here. Edit: This is it: http://www.eserviceinfo.com/download..._CPD-E500.html
Start by checking the mains fuse. If the fuse is blown, check the main switching transistor, it probably failed shorted. It doesn't go on its own - so check the capacitors too, one or more could be bad.
If the fuse isn't blown and the transistor looks fine check the controller IC in the power supply. Btw, if the main supply runs but seems to be in protection mode (listen for a ticking noise), check the HOT (horizontal output transistor). That is by far the most common part to fail in CRT monitors.
The service manual is pretty easy to locate and the schematics are very detailed so troubleshooting should be straightforward. If you can't find it i'll upload it here. Edit: This is it: http://www.eserviceinfo.com/download..._CPD-E500.html
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