20 Most Recent Sony FD Trinitron WEGA KV-36HS420 36" TV Questions & Answers

The SMPS control cirlcuit [power supply regulator inside]; does not get the start voltage. This is a common fault to Sony TVs and related to some resistors at that circuit stage. Even though the cost of component is very less, locating the exact faulty one is a skilled work. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Disassemble procedure to many popular brand TVs and other devices are given in detail with illustrations.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. Viewing it in "Mosaic" or "Sidebar" will make surf easy. http://electronicshelponline.blogspot.com/ Blinking codes details to many popular brand TVs are given. Surf the site with patience.

You should direct your attention to the East/West correction circuit. If the line output transistor was replaced due to it having gone short circuit, damage to this circuitry is likely. Also check the horizontal driver transformer for dry joints, a fault here will cause random failure of the line output transistor Best regards Vintie

Sounds like a fault to its pincushion distortion circuit. Contact any service technician to get it repaired. If you're sound in electronics, and wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.

on your remote try hitting "tv" then info or display

Ur high voltage is dead,the FBT,the flyback transformer is dead.The big black block of plastic with a red wire with a cap hook to the CRT(tv tube).

The blinking is an indication that the set detected a problem. The code usually indicates a bad regulator circuit. If yu can solder, you can probably fix this your self. Please let me know if you wish to attempt the repair. If not, expect a parts cost in the $25-$40 range plus the local labor rate for the repair.

Most of these have a error buffer---if set shuts down power light will blink in a specific sequence---it will only point to the general area of the problem and frankly most of these are not being repaired as the weigh a ton and repairs usually result in the set being replaced with something less expensive and with new features.

If the set goes to all the inputs and works and only will not go out when display is pressed (if display works on the other inputs) the set may need to be reset to factory default or in some cases in the tech menu it may have the wrong number code listed for that input.Problem is only on one input?Display off works for channel and other inputs?

In most cases the standby light might blink with different rapidity to indicate a fault relevant to the processor. It is possible that most of these indicate that there are errors in the processing section. Since there is a possible short or leak in the circuit the output driver section can take in huge current to trip the SMPS or from advice from the micro processor. Remove the power plugs and make sure that high voltage sections are discharged of the potential stored in capacitors. Look for visible signs of leak or of busted capacitors. Look for bulged capacitors or damaged components- burnt or busted. Use a multi-meter to check the continuity or shorting in components, if so detach from circuit and test. If the voltage builds up and the set power ON and then shuts up then the suspected section must be checked in detail.

The processor must have the +5 voltage to the function properly, the +B and secondary voltages also must be checked to infer the fault. Trace with caution and in running through the signal path , circuit trail.

I have fixed this problem, on one of these.

It is a voltage regulator, and it probably died after a power outtage or surge,
am I right?

Get it to a fixer guy, Its a very affordable repair.


are you in VB? I'll do it!

stanby light does not come on my LG 42 PX3RV-ZA