Question about RCA F32450 32" TV

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Shut off wont turn back on.. fuse?

Ive done some on-line checking and i think it may be an internal fuse of some sort. if so, where can i get one, and should i be able to replace it myself. thanks, scott

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  • Anonymous Aug 08, 2008

    how many amps does my fuse have

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Fuse has rating stamped on part.

Posted on Aug 14, 2008

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1 Answer

Fuse blows when I plug in the tv


Check the circuitry that leads the the fuse. Usually when a fuse blows something else is wrong. Something else has failed and is sending too much voltage to the fuse.

Oct 06, 2012 | Televison & Video

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On power up I hold the power button down, I can hear some sort of relay kick-on, sometimes a horizontal white line appears across the screen, then it kicks-off, and the red led blinks four times...


Hi,
White line across the screen indicates that tv got vertical deflection failure problem that may be due to vertical output chip failure. If that kind of problem occurred, tv select protection mode and red light starts blinking 4 times.
Please check vertical output chip in tv main board and replace it to solve tv issue. This job needs soldering work so local tv repair shop will help you.
Thanks.

Feb 01, 2011 | Sony FD Trinitron WEGA KV-24FS120 24" TV

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We have a Sanyo DS27930 TV. We just noticed that there are fast moving white horizontal lines that move continuously through the picture. It is very irritating to watch especially when the picture is...


Hello
You are talking about interfearence lines that comes across the screen of your TV from top to bottom, as moving at an inch thick or so, I thinks. It may be due to the external interfearence, or to some faults inside the TV. You just check the antenna connecting socket at the rear of your TV. It must be moderately tight. Check whether its internal connecting tab has a break or not. If there is some loose or break, replace the same.
Another fault is due to its power supply regulator section. You should check it from the mains filter capacitor to all parts fitted in the power supply section inside the printed circuit board of your TV. It must have some skill, concepet of soldering and desodering, knowledge to follow schematic diagram and more patience.
Also check whether a computer or any like high frequency working equipments set beside your tv. It may also cause some sort of intereferance. Ok.

Oct 31, 2010 | Sanyo DS27930 27" TV

1 Answer

Black vertical line on screen periodically- but most of the time


hi all .ive had the same problem,a thick black line down screen.sometimes it flickers from top to bottom and other permantly in view.but i have solved it.forget your ic boards and taking apart tv.have you got either a ps3 or wii connected to tv.if so unplug power lead from socket and relocate in seperate socket.make sure the lead is completely free of any other leads and you might just find this works.i think the power lead creates some sort of frequency that the tv picks up .good luck hope it works

Sep 20, 2010 | Daewoo DTQ-27U4SC 27" TV

1 Answer

This morning I tried to turn my RCA TV (model 24R411T) on and nothing happened. I tried plugging it into a different outlet, still nothing. I tried leaving it unplugged about 10 minutes and trying again,...


Hello,

Power surges or nearby lightning strikes can destroy electronic equipment. However, most of the time, damage is minimal or at least easily repaired. With a direct hit, you may not recognize what is left of it!

Ideally, electronic equipment should be unplugged (both AC line and phone line!) during electrical storms if possible. Modern TVs, VCRs, microwave ovens, and even stereo equipment is particularly susceptible to lightning and surge damage because some parts of the circuitry are always alive and therefore have a connection to the AC line. Telephones, modems, and faxes are directly connected to the phone lines. Better designs include filtering and surge suppression components built in. With a near-miss, the only thing that may happen is for the internal fuse to blow or for the microcontroller to go bonkers and just require power cycling. There is no possible protection against a direct strike. However, devices with power switches that totally break the line connection are more robust since it takes much more voltage to jump the gap in the switch than to fry electronic parts. Monitors and TVs may also have their CRTs magnetized due to the electromagnetic fields associated with a lightning strike - similar but on a smaller scale to the EMP of a nuclear detonation.

Was the TV operating or on standby at the time? If it was switched off using an actual power switch (not a logic pushbutton or the remote control), then either a component in front of the switch has blown, the surge was enough to jump the gap between the switch contacts, or it was just a coincidence (yeh, right).

If the TV was operating or on standby or has no actual power switch, then a number of parts could be fried.

TVs usually have their own internal surge protection devices like MOVs (Metal Oxide Varistors) after the fuse. So it is possible that all that is wrong is that the line fuse has blown. Remove the cover (unplug it first!) and start at the line cord. If you find a blown fuse, remove it and measure across the in-board side of fuse holder and the other (should be the neutral) side of the line. The ohmmeter reading should be fairly high - well certainly not less than 100 ohms - in at least one direction. You may need to unplug the degaussing coil to get a reasonable reading as its resistance may be 25 or 30 ohms. If the reading is really low, there are other problems. If the resistance checks out, replace the fuse and try powering the TV. There will be 3 possibilities:

It will work fine, problem solved.

It will immediately blow the fuse. This means there is at least one component shorted - possibilities include an MOV, line rectifiers, main filter cap, regulator transistor, horizontal output transistor, etc. You will need to check with your ohmmeter for shorted semiconductors. Remove any that are suspect and see of the fuse now survives (use the series light bulb to cut your losses - see the section.

It will not work properly or appear dead. This could mean there are open fusable resistors other defective parts in the power supply or elsewhere. In this case further testing will be required and at some point you may need the schematic.

Jun 14, 2010 | RCA 27R411T 27" TV

1 Answer

WHEN PUT ON THE TV,THE INTERNAL FUSE BURNED


check input circuit. trace bridge rectifier circuit.. make sure its good.. check tranformer or line filter.

Fuse is probably burning as a precaution because there is a problem in the input section.. either ac side or after bridge

Dec 16, 2009 | Daewoo DTQ-20V1FS 20" TV

1 Answer

Hitatchi 42pd5000 will not power up


pls. open H-output trangister and out side of pcb and check voltage B+ 135v dc is ok ?.
if yes.then ...H-OUTPUT trangister checked and replace
if not then check SMPS .
1.fuse
2.STR
3.output Dyode
check
1st fuse is open then check rectifier dyode cantunity. if sort then replace all 4 dyode.(rectifier)
and if dyode is ok .then check STR cantunity is sort then Replace with New STR but 1st 220uf/450v dc capaciter cheked / 2nd. in SMPS stage any P.F and capciter likage or sort cheked or chenged first after the NEW STR use
*. note: smps pcb checkd any dry canaction pls. Resolder first.

Oct 04, 2009 | Hitachi Televison & Video

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Do I need the orignal remote to bring up the internal menu so that I can program it for all the channels.


no you dont need original remote to bring up menu but there are several replacement remotes you can buy at like wal mart but make sure the new remote carries a menu button on it just read or ask for help on remotes ,,some of them remotes can be almost expensive as a replacement remote ..mat electronicts has a wide sort of replacements remotes for your tv.can find them on line

Apr 17, 2009 | Emerson Televison & Video

1 Answer

Dead unit


check fuses, should be about 4 of them, ive seen fuses on these units shut down and ppl think they were expensive fixes

Jan 21, 2008 | Zenith SY2549S TV

1 Answer

Sony KV-20FS12


First, unplug the tv set for 30 seconds, plug back in and try ti turn on.. Second, If you're NOT still under warranty you should at least open the TV and look for a blown fuse near where the power cable enters the set. A lot of times you can buy replacement fuses at a local electronic or hardware store and they're easy to replace. Check the fuse. If it is blown, it will be obvious and make sure that the set is unplugged before replacing it. If it blows again, or if it is not blown, your problem is probably in the 'X' volt regulator and you will need professional help with the repairs. You can also check the board where the components are mounted and resoled any that look bad. Brief power outages may cause the TV not to turn on. If you are using a surge protector, try connecting the set directly to the wall outlet. In your case it could caused by a blown fuse, a leaky diodes or a bad solder joint at the horizontal drive transformer. All can be replaced at a local electronic or hardware store and they're easy to replace If this does not correct the problem, you may need to have your TV serviced. good luck!

Jan 25, 2006 | Sony KV-20FS12 20" TV

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