Hitachi C29-F50B, 64cm CRT. Worked o.k. last night, dead this morning. any ideas? Once or twice would switch on and power back down all by its self but would re-start on the remote and problem would not show for months, even years. As I said, any ideas or do I just dump it. Thanks for any suggestions. FOG.
Wait till its dark. Leave it on a neighbours verge. Run back inside.
Make sure you turn off any security lights you may have before venturing out.
The problem doesn't have to be related to its previous misbehaviour.
You could check the PSU for internal fuses that have blown. Ocasionally fuses fail for no good reason and just need to be replaced. Just make sure the set's been unplugged for an hour or so, and even then stay away from the anode (that's the thing plugged into the side or top of the tube) and whatever it's connected to.
Sylvia.
Sorry not what you wanted to hear.....
Maybe have a quick look in the power supply area for dodgy electrolytic caps?
Extremely rarely. They sometimes blow due to an abnormal surge, and will work again with just a fuse replacement, but even that is pretty rare, and more in the realm of wishful thinking.
MrT.
I have seen it happen. OK, perhaps only once, and not in a television, but it did happen. Given that it's easy to check, it seems sensible to do so before junking the set.
Sylvia.
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and
Agree, only seen it happen on a couple of occasions, by the look of it the wire had come off the end cap inside. Very rare.
Also had new fuses that were getting rather hot. turned out they had several ohms across them. Replaced them with others that were ok. Weird, that was.
"Mr.Turd"
** Nonsense.CRT type CTVs have de-gaussing coils that draw enormous surge currents at switch on - for larger screen sets the peak current can easily exceed 60 amps.
Causes fatigue failures in fuses ( nominally rated at 2 to 3 amps ) all the time.
..... Phil
and
Exactly, even miracles happen sometimes.
Of course, never suggested otherwise. Just be prepared to be disappointed.
MrT.
O.k. Thanks to all for the help and advise. Took the back of the thing and finally found the only fuse in there and replaced it with the correct spec fuse, put the back cover back on and powered it on, POP! went the fuse immediately along with the the relevant house breaker, so it is off to the tip today for it. New telly bought and installed so not too much veiwing pleasure was lost. Thanks again. FOG.
"FOG"
** Could just be a burnt out de-gaussing thermistor ......... Phil
Yes I can understand that as it seemed to go pop very early on in the start-up sequence, no relay click and no deguess crackle but with no cicuit diagram, minimal skills and I suppose, no real enthusiasm to delve any deeper (Plus I think management wanted a new one,........ well alright, me too!) then it was really predestined or the tip! I do not like throwing away perfectly good peices of equipment or rescuable gear but sometimes......... Still it is now landfill. Yet again thanks to all for help and advise and happy veiwing!!! FOG
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How old was the set? I remember staying in a country motel about 4 years back and they were still using 1970's vintage 20" Hitachi sets in the rooms, so they must be very reliable and/or cheap to maintain.
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