Hi all!
This is one monitor that they have put in my hands for free, it comes from a clerk moving out from an old office and trashing old things.
First time I switched it on, green light fired on, but a few seconds later it went amber without showing a picture on screen. I tried to look with a torch but I couldn't see anything. Next time I tried, it wasn't even green on, and no more.
I opened box and looked at the circuits. The scaler seems to be ok but there are problems in the power/inverter/sound board.
The obvious one: the big cap is toasted. Not a bulge in it but it seems like a dust spill from the bottom. Pushing slightly, the wire gets out. The ohmeter said about 300 ohms.
Another obvious one. There is a big black burnt shadow on the board around the four diodes near the big cap. The ohmeter said one (the second one, left to right) is shortcircuited.
You can't see it but the fuse near the mains is measured open, I need to replace it.
I have searched for the service manual and I think I have been successful.
There I see big cap is 100 uF 400V, diode is 2a07 and fuse is 2.5A 250V
I ask for help from you, oh wise people. I can replace those parts, but I want to know what other parts are probably affected and what are in a bad state and can possibly cause the failure again, if you can help me.
These are some pictures and manual:
This is one monitor that they have put in my hands for free, it comes from a clerk moving out from an old office and trashing old things.
First time I switched it on, green light fired on, but a few seconds later it went amber without showing a picture on screen. I tried to look with a torch but I couldn't see anything. Next time I tried, it wasn't even green on, and no more.
I opened box and looked at the circuits. The scaler seems to be ok but there are problems in the power/inverter/sound board.
The obvious one: the big cap is toasted. Not a bulge in it but it seems like a dust spill from the bottom. Pushing slightly, the wire gets out. The ohmeter said about 300 ohms.
Another obvious one. There is a big black burnt shadow on the board around the four diodes near the big cap. The ohmeter said one (the second one, left to right) is shortcircuited.
You can't see it but the fuse near the mains is measured open, I need to replace it.
I have searched for the service manual and I think I have been successful.
There I see big cap is 100 uF 400V, diode is 2a07 and fuse is 2.5A 250V
I ask for help from you, oh wise people. I can replace those parts, but I want to know what other parts are probably affected and what are in a bad state and can possibly cause the failure again, if you can help me.
These are some pictures and manual:
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