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Sears tv 774 15580

Sears tv model 774-15580 high voltage sparks from ceter post to square bracket

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I have same problem, arcing from horizontal output transformer (fly back trans), sears has no model number in their system, Flyback Transformer needs to be replaced but no luck finding one yet, anyone have suggestions on where to find one, part number BSC29-N1111

Posted on Aug 18, 2008

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Posted on Jan 02, 2017

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I have a 1970 yamaha80 GT1, im having an electrical problem, the bike is getting elctricity fine from the points all the way to the front coil witch i replaced so i know is not the problem, the electric...


There are two coils on the bike. The pickup coil inside the flywheel and the high tension coil with the spark plug wire attached. If you can see arcing at the mount bracket where the high tension coil mounts to the frame, either the coil is bad or the plug wire is bad. Some coils allow replacement of the plug wire, some don't. Chances are you will need a new coil.

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The tv is having a cracking sound and there is spark inside. the tv is having picture problems everytime it is turned on.


There is leakage of high voltage from LOT (line output transformer) causing sparking,get this LOT replaced and do not turn the set ON as it may damage the complete set,one of the other cause of sparking is picture tube earthing is not proper,call some technical expert to rectify,memory loss is also due to this sparking.

Jan 25, 2011 | JVC AV-24F702 24" TV

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When I turn my KV-34XBR800 on, the picture will not come on and the standby light keeps on blinking 7 times each time.


Hello
Seven blinks of standby led in Sony sets denotes a High Voltage Shutdon proble. It is a self diagonosis process of the microcomputer Ic inside it, which senses the high voltage and shuts down the whole system to prevent it from further damages. The high voltage means that not the high line voltage of your househod supply, but the voltage inside the circuit board of the TV exceeds more than normal. Your tv, being 34", have a high tension voltage of 32,000VDC at the final anode of the picture tube. This voltage depends on the main regulated voltage goes into the circuit board from the power regulator system. There is a power regulator built sytem inside your TV, to regulate the voltage send to main board, which bears the Line Output Transformer [LOT], which in turn generated the above said high voltage. The normal regulated voltage going to board may be around 135VDC, to a 34" tv. Even a rise in, say, 2 voltage more than normal may cause high voltage to rise up considerably high enough to get it shut off. Soney sets are normally have STR regulated power supply system. It is very accurate and durable. The main fault comes to it is soldering trouble. The above said STR regulator may rise to as high as 90 degree centegrede when working. Repeted heating and cooling, make the soldering on its legs to get loose contacted; causing improper regulation process. Your tvs case must be so.
You just open your TV, and find out the regulator section inside it, where the AC input voltage goes into. Just pull it out and resolder all suspected points by applying a little more solder; as exact bad solder point is very difficult to locate. We in service field also does this. 90% sure that this will retify your problem.
Take proper care before opening your TV. Keep in mind that you are going to work with an electrical equipment, which have as high as 32,000VDC poins are inside it while working. Take all precautions. Keep children away from you while you works. Never allow them even stand beside you Ok.

Nov 09, 2010 | Sony FD Trinitron WEGA KV-34XBR800 34" TV

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How to change spark plugs on a 4cyl 2005 kia sportage


Inspection
Inspect the spark plug tip for wear and damage. If the tip is covered with carbon, replace the plug. Do not drop or shock the spark plug. If the ceramic body is broken replace the plug.


7ce3b2b.jpg
Fig. Spark plug inspection points


Removal & Installation
WARNING Do not attempt to remove spark plugs when the engine is hot.
  1. Disconnect the negative battery cable.
  2. Remove the air intake hose assembly.
  3. Remove the accelerator cable bracket.
  4. Remove the six bolts and coil cover from cylinder head cover.
  5. Remove the four bolts and the two coils from the cover.
  6. Disconnect the high tension leads from the spark plugs by twisting the boot and removing.
  7. Use compressed air to remove any dirt from around the spark plug hole.
  8. Make sure the spark plug socket fits squarely on the spark plug, and then remove.
To install:
  1. Be sure the spark plug gap is set to 0.039-0.043 in. (0.98-1.09mm).
  2. Apply anti-seize compound to the spark plug threads.
  3. Carefully install the spark plug into the cylinder head and torque to 11-17 ft. lbs. (23 Nm).
  4. Reconnect high tension leads.
  5. Install the two ignition coils and torque four mounting bolts to 14-19 ft. lbs. (26 Nm).
  6. Install the coil cover and secure with six bolts
  7. Install the accelerator cable bracket.
  8. Reconnect the air intake hose assembly.
  9. Reconnect the negative battery cable.

Have a nice day. Good luck (remember rated this help)

Mar 05, 2010 | 2001 Kia Sportage

3 Answers

The tv was working and made a hiss and pop and quit, I replaced the flyback and now it just ticks


When you replace a flyback on an RCA Model, Always replace the Horizontal Output tranistor with it. These models are notorious for for bad solder connections in and around the HV area. Also check around the High Voltage Area for bad HV Scaning Capacitors. These are usually square shaped , for cracking,arching,and swelling. Replace if found to be defective. One more thing check the neck of the picture tubes for cracks or arching inside a tube when trying to turn the set on. Sometimes a bad scanning cap will go defective and drive the high voltage so high it cracks the Green CRT.

Nov 15, 2009 | RCA P52960 52" Rear Projection Television

3 Answers

57xbr10w pops & sparks under one of the lamps & shuts off


The Lamp (CRT) got shorted / leaky that gets spark / arcing and requires replacement. TV is an old model and I'm not sure that CRT is available any more.

May 31, 2009 | Sony KP-57XBR10 57" Rear Projection...

1 Answer

Sony projection tv picture real bright and not clear


This sounds like your flyback on the D-Board of your tv is going out (The part is around $70.00) and available at www.Sears.com the parts dept have make and model ready ( This is a very common problem with this model of sony tvs) Have a pro do it HIGH VOLTAGE! Please rate in order to keep this site free
Thank you!

Dec 14, 2008 | Sony KP-53HS20 TV

2 Answers

Tv is sparking and making noise?


Warning: Flyback Transformer Failure. ( extreme high voltage ) 22,000 Volts +

Do not attempt to fix this without another human being present who's trained in CPR.

Thank you for choosing FixYa!
Azkeyz, Wizard Division.

Sep 23, 2008 | Prima CV1311 TV

1 Answer

RCA model hd56w58


the part number for the high voltage transformer, according to another post for this tv is 258512. See below:

Best Solution posted on Sep 03, 2008 3%20stars.png

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Rank:nonexpert_s.gif Apprentice
Rating: 85%, 1 votes
Yes, i had the same issue. High voltage trans. and the HV distributor (splitter) goes bad on there tv, they are known for that. I have the part numbers for the HVT p/n 258655 and HV distributor(splitter) p/n 258512. The two p/n are for HD56W58 proj. tv

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1 Answer

Sparking fire inside the microwave - Knemore Model No. 721.80522500


If the sparking has stopped, that should be fine.

If you have a burned spot you may need to sand it and repaint it with appliance paint from Wal-Mart, etc.

You can probably replace the shelf bracket / hook if it's still available.

If you'll post your brand and model, we'll see if we can steer you toward a source for a new shelf bracket.

If it's a Kenmore, you can probably find an exploded view by entering your FULL model number here: http://www3.sears.com (the 3 is correct)

We're happy to help and we appreciate your thoughtful rating of our answer.

Dec 07, 2007 | Microwave Ovens

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