When a computer monitor gets to a particular age they sometimes decide it is time to retire. In this case the monitor had succumbed to the 'capacitor plague' and so started to behave rather oddly. It only became apparent that it had this type of plague after taking the thing apart.
If you are likely to do this yourself then bear in mind that the capacitors on the board around the power input can retain quite an amount of electrical charge. Although in this instance you shouldn't be anywhere near those components - if you aren't sure then don't even contemplate any repair at all, what are you, an information-averse risk taker?
In the case of this model of ViewSonic monitor there had been so many failures that people were assembling bags of replacement capacitors at lower cost than sourcing them yourself. I bet ViewSonic were really chuffed - I've had three of their monitors fail this way.
Here are the old capacitors lying forlornly on the desk, wounded, swollen, in a sorry state that they were unable to complete their tour of duty-cycle.
On reassembly the LCD monitor worked admirably for another year until something else failed in an altogether more dramatic fashion which produced a lot of smoke. You don't get that very often. The other repaired monitors are still running trouble free five years later.
For official/internal use only:
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