AidanLunn wrote:I've heard bad things about these SMPSUs in the FV30 series, both at the time (1990 editions of Television mag) and even today (a discussion on DigitalSpy forums), s it sounds as though people still haven't got over them.
I have heard that these PSUs can be very over-sensitive to even the slightest ripple in voltage, would larger value smoothing capacitors help sort this over-sensitivity?
The PSU's you are referring to here were the Thomson designed FV30, FV31, and FV32, (the unholy trinity
), these were nasty and difficult to repair.
The FV33H on the other hand was a JVC design, and was a much, much simpler affair (a lot less components), and was fairly stable and reliable, the main problem being the arcing to the heatsink, and consequent failure of the STR chip and the components already mentioned (caught in the crossfire). They were relatively easy to repair, unlike the three Thomson designed ones mentioned above.