Remove wire Can someone tell me please how to remove the high voltage wire of a flyback that is connected to another high voltage transformer that is connected to three high voltage wires to the anodes of the TRC R,B,G. -thx

CONCENTRATE ON THE POWER BOARD--if the fuses are good it is most likely bad solder connections on that board--seen over 80 of these with this problem--lead free solder etc.

Get someone to remove the power board and solder every connection on it--flyback is High Voltage transformer and I have never seen ONE bad in these sets.

9 out of ten times bad solder connections on power cause the problem--they can look perfect but cause this---if you have Yahoo Im we can talk there.

Be aware some "experts" here will tell everyone it is flyback--a guess and usually wrong.

let me know if I can help, I do this here for free and a positive very helpful rating helps me.

Listen to someone who has fixed many of these sets and does not guess.

REGARDS, SD TECH

There is usually 3 flyback (hi voltage transformer) that gives the high voltage to the tube over the red wire.
On the flyback you got two adjustment. Focus and ''brightness'' ajustment. Sometimes, you can ajust from the back and they leave opening for the screwdriver entrance, otherwise, you remove the chipboard panel and adjust those screw. It usually write wich ajustment is focus directly on the flyback. As you can see its a bit of a technical ajustment, plus you have to do it when the tv is running and with the voltage on. Needless to say that its pretty easy to do a short in the electronics circuits. I hope you have someone handy with basics electrical skills. Also this might mean your tv have some parts getting in problems actually, but still it would be the first thing that i'd try in this situation... Let us know...

Hello butmommy03,

This is the procedure but first I must warn you. You are dealing with one of the most dangerous parts of a TV The High Voltage anode or the CRT and the flyback transformer. That being said this is what you have to do:

1) unplug the TV from the wall or power strip.

2) take the back of the TV, and find the High voltage trippler and using a screwdriver grounded by a clip-lead to the grounding strip touch it to the exposed metal of the input to the High Voltage trippler.

3) using a soldering iron de-solder and remove the wire from the HV trippler.

4) Once this is done, angle the chassis to expose the bottom of the Deflection board, if this is no possible you will have to remove the deflection board to get a look at the bottom, once this is done and you can view the bottom of the board using a soldering iron and a de-soldering pump you can remove the solder from around the pins of the flyback transformer about 10 pins in all. Then remove the screws that hold the flyback in place. this is the procedure you requested,

However again I must ask you not to do this yourself and to get a qualified TV technician to troubleshoot this TV for you.

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

It is usually large and black. Its the one with the rather thick red wire coming out of it. The other end of that wire either connects directly to the picture tube or into a distribution block which distributes the high voltage to the 3 picture tubes (guns) in projection TV's. Be aware that this transformer produces high voltage and can store voltage even when the set is unplugged. I hope this helps.

Replacing a flyback is not something I would suggest for anyone with no electronics experience. Second, lets see where the noise is coming from first. Take off the back and listen to the noise. The flyback will be at one end of the large red wires that go to the tubes. Sometimes the connection at the tube is not 100% and the noise comes from there. BE CAREFUL - there are high voltages going through this red wire that can be dangerous even with the set UNPLUGGED!! IF the noise is coming from the connection at the tube, with the set unplugged, carefully turn the rubber cap back and forth touching only the rubber part with one hand. Put the other hand in you pocket while doing this.

If the noise comes from the flyback side, if you can solder, again with the set unplugged, try resoldering the pins on the transformers. That may resolve the problem.

Keep me posted.
Dan

You can tell to some extent what it may be by listening carefully and trying to identify the location. If you, remove the back cover of the set; stay away from danger, just listen to where it seems like the sound is coming from. If it is coming from inside the high voltage cage it is the flyback. If coming from around the main power transformer it is one of the power supply parts.

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DONT DO THIS. these wire carry several thosand volts. depending on the type of flybacks the wires can be removed at the other end of the wire. i tell you what i do at the shop very carefully remove unsolder the flyback.

yes its dangerous because of its high voltage, but you can remove it yourself, just unplugged the power cord, then get a screw driver insert it to the high caps connected in the flyback its color red push the pin inside and pull it off be sure not to touch the metal part of your screw driver, then thats the time to unsolder it...

remove solder from all pins and squeeze clips to remove...

all the projection tv are made with removal chassis in mind becouse thats the only parts you carry to the shop remove the upper ruber tap and gentely but firme pull the cable..be carefull tvs have verry dangerous sites, specialy in that area..good luck