Clicking Noise Will Not Power On

You either have a cold solder joint in your horizontal deflection circuits or your or in your horizontal output circuit. please be careful due to the fly-back transformer still holds power even unplugged until you discharge it.( ground it out). Hope this helps.

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Thank you!

Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. Or, something simple like a blown fuse inside the TV. The most common board to go bad is the Backlight Inverter Board. It what supplies power to the screen. But, I can't say it's 100% the problem because I can't actually look at the tv over the internet. I can only make guesses with the symptoms.

You have a few choices:
1. You can try leaving the TV unplugged for 30 - 45 minutes so the TV can discharge and reset itself.
2. If by chance the TV is still under warranty, go that route.
3. If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists.Usually, cost under $20. And most cases the new part cost less than $15.
4. Pay a TV shop to do the repairs. It maybe costly, but get an estimate of how much they will charge. That way you can decide if it worth repairing or replacing the whole TV.

I hope I shed some light on the subject for you.

I have this problem. it is caused by an o/c mains transformer primary winding. the clicking and flashing light is the stanbyy circuit trying to switch the power on to the main (large) transformer when it gets no voltage out it switches back off

Mmm this is tricky - there is no normal transformer power supply in a tv. They usually just rectify the supply and regulate it for the circuits, and use voltage doublers and a transformer to get the EHT. Be carful the voltages can be 20,000volts! Check all the capacitors. The EHT flyback transformer can arc and present a clicking sound. Make sure everything is clean.

Most likly the Horizontal output transistor has shorted out because of cold solder connections on the flyback transformer, and or a bad capacitor in the sweep power supply and or, a bad flyback transformer. If the set Did not blow the fuse, then mopst likly you will have a problem in the main power supply where several parts in a kit form has and should be replaced all together.

the high pitch squeal indicates shorted component/s. the transformer goes hot co'z its being overloaded by the shorted component, it too could be the one creating the squeal!!

if you have experience with electronic troubleshooting, try to test some of the components particularly on the secondary part of the transformer.
Be careful and make sure the TV set is unplugged.
test for shorted diodes and transistors, if you're in doubt of your readings try to desoldering one leg of the diode then proceed with the testing/measuring. replace any of the bad components you find exactly with same part number or replacements with the same rating.

spend more time on it resoldering some other cold soldered components.

Dear customer,
The most common solution is to follow the steps as follows
1. unplug the power cord
2. press and hold down the <ON/OFF> button and reconnect the power cord
3. press the <STOP/RESET> button 2 times and then release the <ON/OFF> button
4. Display LED show "0" press the <+> button 1 time Display LED show "1"
5. press the <Start Color > button 2 times and then press the <ON/OFF> button waitng for testing out 2 pages
6. Open the cover. The carriage that holds the ink will move to the left hand side. and then unplug the power to the printer
7. Push down on the end of the black cartridge. A clicking noise will be heard.
8. Slide the cartridge out of the holder towards you.
9. Push down on the end of the color cartridge. A clicking noise will be heard.
10. Slide the cartridge out of the holder towards you.
11. Once both cartridges are removed, unplug the power to the printer (without turning it off).
12. Reconnect the power cord.
13. Turn on the printer.
14. Open the cover. The carriage that holds the ink will move to the left hand side.
15. Place the black cartridge in the bottom of the printer.
16. Slide the black cartridge back until is cannot go back any further.
17. Push up on the end of the black cartridge, a clicking noise should
be heard.
18. Place the color cartridge in the bottom of the printer.
19 Slide the color cartridge back until is cannot go back any further.
20. Push up on the end of the color cartridge, a clicking noise should
be heard.

hope its udeful. thank you.

I fixed the problem with the "no power on, low clicking noise". The NPN transistor (2SC5931) was shorted. This transistor controls the horizontal hold. The shorting caused the power supply to overload and restart, then recycle. This was the cause of the clicking noise. Unfortunately this transistor was over $50, most likely due to the extinction of CRT's. I did find a replacement transistor 2SC5552, which only cost $2 (but I was able to get it in Mexico). The location of the transistor is located on the left side of the TV (looking from the back). Directly in front of it is the high voltage transformer which powers the CRT (should have a thick red wire). The transistor is attached to a large aluminum heatsink. To remove the transistor you will have to remove the entire electronics assembly to you can easily get to the underside. This was the solution for my TV, but there could be other components damaged.

Sounds pretty bad to me, I had a computer monitor that did a similar thing when plugged in after blowing, it's not a good thing. I didn't even bother to mess with it. You may have to replace the whole power board or at least have a whole handful of pieces to re-solder. It most likely isn't worth it unless your other tv's are under 30" and you don't have a lot of money ;)

- Dave