Power supply? I have had this tv for 26 months. The power in the area went down to a very low situation and fluctuated for a few seconds before going back to normal. Power never went completely off. Anyway the tv didn't know whether to be on or not and before I could unplug it the power returned to normal. I turned the set on and the volume was at its highest level. I turned the volume down and noticed the picture was without as much color as usual. I tried to access the menu and nothing happened. Then the set turned itself off. Then it turned itself back on. then about ten seconds later it turned off etc,etc,. Any ideas?

I have had no reason to seek parts for the set we have and have been out of the service business for a number of years. Many of my general parts sources are defunct since all but maybe 10-15% of electronic stuff is cheaper to toss than repair.

In most such sets, the larger majority of the components will be available from other sources but most of the circuitry is assembled by robotics and contains parts that are nearly impossible to replace by hand.

The power supply is one exception as many of its (far fewer) parts are amenable to hand assembly.



I have read several times of a power board implying that it is separate from a main board and probably not difficult to remove for servicing. This is not an uncommon arrangement. Switching power supplies are by their nature, very easy to design for a broad range of input voltages and line frequency differences but there may still be reasons to adapt them for some local power considerations.



This may allow for removal and repair of the supply itself elsewhere and the nature of your failure points to the supply but does not preclude a problem not related to the PS itself; it may be just going into a protective mode as described.



If our Olevia fails, I will probably make a study of it to determine if there might be a small business opportunity in restoring the supplies at a reasonable cost.



I'm fairly sure that the millions of capacitors made with defective Chinese electrolyte will be plaguing us for many years to come and who knows how many are still in the pipeline. I have had no reason to seek parts for the set we have and have been out of the service business for a number of years. Many of my general parts sources are defunct since all but maybe 10-15% of electronic stuff is cheaper to toss than repair.
In most such sets, the larger majority of the components will be available from other sources but most of the circuitry is assembled by robotics and contains parts that are nearly impossible to replace by hand.
The power supply is one exception as many of its (far fewer) parts are amenable to hand assembly.

I have read several times of a power board implying that it is separate from a main board and probably not difficult to remove for servicing. This is not an uncommon arrangement. Switching power supplies are by their nature, very easy to design for a broad range of input voltages and line frequency differences but there may still be reasons to adapt them for some local power considerations.

This may allow for removal and repair of the supply itself elsewhere and the nature of your failure points to the supply but does not preclude a problem not related to the PS itself; it may be just going into a protective mode as described.

If our Olevia fails, I will probably make a study of it to determine if there might be a small business opportunity in restoring the supplies at a reasonable cost.

I'm fairly sure that the millions of capacitors made with defective Chinese electrolyte will be plaguing us for many years to come and who knows how many are still in the pipeline.