Fuse constantly blowing on 32" Panasonic HDTV Tau (ModelCT-32HL42)
Our TV set had the same fuse blowing on us twice in less than 10 months. When it happens, the TV can no longer be turned on. You can hear a click when you press the power on button but not in subsequent attempts (unless you temporarily unplug the TV for a few seconds). We are being told by an independant repair shop that this may be due to a capacity issue: the electrical circuit that converts the signals to a digital format would not be strong enough to withstand the flow. If it's the case, can this be repaired by other means that replacing the fuse on and on ? Have you ever heard of such an issue affecting these Panasonic HDTV models ? Should this be considered a manufacturing defect ? Thank you.
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This set has a pair of common issues----one: the fuse (6.3 amp and special--do not replace with Radio Shack or generic fuse) blows for no reason---with back off follow power cord (unplugged please) direct to the fuse which snaps into a holder--if stand of wire inside is broken or black replace the fuse with (not generic cheap fuse) correct fuse.
A few of these sets had problems with the degaussing circuit but that is rare----9 out of 10 times replacing the blown or open fuse with the CORRECT one returns set to operation.
I stress that as saw one where a guy replaced the fuse 3 times in a row in a few days with a generic one that popped at turn on.
Lamp light flashing once every 5 seconds or twice every 5? Twice every 5 seconds,....lamp failure, once every 5 seconds,...ballast or thermal fuse failure. You have a lamp, ballast or thermal fuse problem. The ballasts are a discontinued part and can only be purchased used at approx. $225.00 or rebuilt for around $175.00 less any service charges to diagnois and repair.
That would be a 6.3 AMP fuse. If the fuse in the set is blown most likely the thermistor for the degausser is bad and needs to be replaced too. If you get me the model number of the TV I can get the part number for the thermistor. If you don't replace the thermistor then the fuse will most likely go right away or within a few days of operation. Please rate my answer. Thanks...
A slow blow fuse is also known as an anti-surge fuse the idea being any sudden "spikes" in you mains electric when you switch on would blow a quick blow fuse. Anti surge fuses are designed to tolerate any sudden initial electric pulse.
I had a similar problem, in that I could not find the proper fuse for my set. I bought a bit higher amp fuse from Radio Shack and it ended up blowing a couple months later. I've since pulled the TV down and replaced it with an LCD set, so I've solved my problem.
But, to address yours, I don't think the amp difference would not be the problem. Likely, there is a power issue on your set causing it to draw more amps and become out of specification. Using a higher amp fuse would buy you more 'capacity', but if its blowing those too (repeatedly), its likely a real problem in the set. I'm not a TV technician, so I can't tell you why. I'd suggest taking the thing in for service (cheaper than the house call) or if that is too expensive, looking at putting your money into a set that won't give you those problems. Or, just keep replacing the fuse until it doesn't fix the problem.
These sets have a number of problems like yours which are associated with bad solder connections or cold solder joints. On this set one pin on the the start-up relay is usually open or intermittent
The solution is to resolder connections on main p.c board. and especially on the vertical output
IC. Also change the caps in the vertical section to avoid future problems. Scrivitron.