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HI, I am having JVC AV-28PROW which worked fine all off sudden its stops with small blast sound and if we unplug the power and power if after sometime it works fine. After this it occured frequently and the brightness seems to be lesser. when we switch on the picture comes and within seconds it turns to black and white then it went dark. next time if lucky it starts normally. Highly requested your advice.
The symptoms described would suggest that there is a component failing on reaching, and being at, a certain temperature for a prolonged period, the fact that you state it works again after being left for a while would back this theory up, as fault is clearing when the component cools down after switching off. Of course this is not liable to be the case for long, as its very likely in a short matter of time the set will fail at switch on. There is nothing you can do as it requires investigation by a technician.