Samsung 36" TV Question about a Horizontal Output Transformer
We're nearly 100% certain that our TV needs a new Horizontal Output Transformer. Is this something that is relatively easy to replace? Is soddering involved, or is it merely the same as changing a relay?
If it fairly easy, where would I get a replacement HOT?
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LOT [Line Output Transformer] fault. Check the horizontal scan output transistor too. If it is damaged, this kind of fault can occur. Anyway, the fault is related to its horizontal scan output section circuit. Check it. To get more details, http://electronicshelponline.blogspot.com/
If the power light flashes, it is an indication of shorted component/s on the main board circuit. most probably it will be with its Horizontal Output section. Horizontal output transformer, Horizontal Output transistor etc: Your set need a detailed check up.
Hello Thanshar, Hi, you TV has sound, but no picture. this could be several things, and let us add the red led flash. In my analysis, no picture means no high voltage is reaching the picture tube. this could be due to a bad Horizontal output transistor, and/or a bad flyback transformer. This bad transistor is causing an overload to the power supply section, causing the 4 led flash to blink. Now i want to know if you want to do this service or get professional help. if you decide to do this by yourself, this needs to be performed: the Horizontal output transistor must be checked for short, the horizontal flyback transformer needs to be tested, the deflection yoke also needs to be checked, especially to horizontal coil.
You've lost the horizontal deflection circuit. Most likely the horizontal output transistor and high voltage
(flyback) transformer. When this happens this power supply tries to start but shuts down because the Horizontal output transistotr is shorted.
These units have a reputation of loose solder joints in the horizontal/high voltage circuit. As this is a dangerous circuit be carefull if trying to repair it yourself. Always unplug before attempting a repair. Start by soldering the horizontal driver transformer. This is a small four pin transformer just off of the base of the horizontal output transistor. Solder these four pins and work your way soldering everything up to the horizontal output. While you are there be looking all over the board for little burnt places at solder joints. Next, work your way from the collector of the horizontal output to the high voltage transformer. Remember also to solder both legs of all components that you come across. Solder all the legs of the high voltage transformer. I hope this helps and thanks for using fixya. I am here to help.
Hello Munroe the problem is coming from a fautly flyback transformer or a faulty horizontal output transistor, what i would suggest is tap your tv set on the side if the picture comes up than this is bad soldering on the one of this circuits above and this is an easy fix, if it turns out to be bad solder on the pc board take it to a near by tv repair shop this fix should not be more than 50 dollars or so depends on the repair shop,Thank You hope this helps have anymore questions feel free to ask me.
There is a good chance that the failure is in the main power supply.
A second chance is that the set is protecting itself from a failure after the supply; this is more likely to occur in the horizontal section where the highest power consumption occurs.
If the failure is in the supply, it could be a fairly reasonable cost repair.
If in the horizontal section, depending on whether the failure is limited to a $10 horizontal output transistor or a bad flyback transformer.
The transformer should still be available but with markup, shipping and installation, the cost could exceed the $100 US mark.
Generally, I have been recommending folks repair their old standard definition sets, buy a converter box for digital TV, and not dispose of them since the flat panel sets are dying like flies, often just after the warranty expires.
This would at least provide some kind of set when the expensive LCD or plasma sets go belly up.
jdosk-the high pitch noise you hear is generally from the horizontal output being shorted,the horizontal output is usually near the flyback transformer,get a digital multimeter to checkthis part.Let me know I'll try to help. cooltek Feb.16/08
The F27442 uses the CTC203 series chassis and that symptom is very common. If the horizontal output is shorted you MUST resolder the coil in series with the base of that transistor and the pins of the small horizontal drive transformer. When they have been properly resoldered you can put in a new original horizontal output transistor. If the output transistor shorts out again then your flyback (high voltage) transformer is shorted and needs to be replaced.