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Troubleshooting my tv does not turn on and i want to know the right connection of a power transistor in the tv receiver.and i want to know how can i check whether the line output transfomer and the transformer next to it is faulty or not

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Re: troubleshooting

If you want us to help you, you must provide the make and model of your set.

Posted on Aug 29, 2007

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Sling Box Pro - No network light, No light in logo, only power light on. Therefore won't connect to network. Was working fine. Tried reset button and also power off/on. Only the red power light is on.


If you are getting a light on the Sling Box indicating that it is connected and powered on, you may check your Internet connection to the receiver to make sure you are actually connected.

You can check you Internet connection on your receiver by pressing the Menu button on your remote. This will display the Main Menu on your TV screen. Press 6 (System Setup), 1 (Installation), and 9 (Broadband Setup). Once you are on the Broadband Setup screen, press 1 (Network Setup). An IP address should display on the Network Setup screen. You can also run a connection test on your receiver. If you continue to have problems connecting, you can give Sling Box a call to troubleshoot the Sling Box. Here is a link: I hope this helps.

Ray Calo
DISH Network

Feb 07, 2011 | Sling Media The Slingbox Pro

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dont know what make or model it is, but sounds like it is the horz.output transistor,or stk,s or the flyback MATS ELECTRONICS FOR PARTS AT #1-800-628-1118

Feb 15, 2010 | TV Receivers & DVRs

1 Answer

Receiver LED just turns off in 5 seconds

some tvs have a over voltage or over current circuit protection. this is built into the main circuit to avoid further damage to the tv set. Your tv probably has a switching mode power supply and it's shutting down probably due to an over current condition usually a shorted horizontal out transistor, that is why when you replug the ac cord you get the power light indicator come on for a few seconds then turns off. You may have to take the set in to a tech to diagnose the problem or get an idea on the repair cost.

Sep 09, 2009 | TV Receivers & DVRs

1 Answer

A scheme of philips 63kv5616

Hello, just got your note, till today I fhave found a diagram of that TV - it's g110 chassis, in some days I'm gonna to try and repair it. If there's a trouble then I let you know and ask for a support. Thank You. Witesmol

May 07, 2009 | Philips TV Receivers & DVRs

1 Answer

Power transistor and fuse has blown, after replace TV works about 10 minutes and old story again

sounds like there is still something wrong with the set. Did you check resisters and other components in the circut? Do you have a schematic for this unit ? Something is drawing to much current slowly. Check solder connections too just in case.

Apr 01, 2009 | TV Receivers & DVRs

1 Answer


if you are able to check it yourself i will give procedures.
i use avo meter check continuity of cable and fuse,
ii check bridge rectifier diodes (lekage)
iii all semi conductors at the supply stage. (lekages)
iv fusable resistors surrounding a main power transistor.
after that replace every thing normally and power.
v if you fail take it to w/shop


Mar 26, 2009 | TV Receivers & DVRs

1 Answer

Digital Stream HD 3150 OTA HDTV tuner does not operate

Disclaimer: The answer provided is entended for you to have some basic electronic knowledge and soldering skills.

Troubleshooting switching power supplies just sucks, but there are ways of finding the fautly componets. In my case, a visual inspection found 2 bad capitors, the tops bulging open and oosing goo. If you look at the tops of any other caps they should be flat. You can also note faulty caps by discoloration of the circiut board itself. I had one other faulty cap on my supply that, by visual inspection had been running hot. After replacing the defective caps (Nichicon 105c) I went with an ohm meter, and checked the smaller transistors for faults. Q1 a very common transistor was bad (2N3906) with a base emitter short. In conclusion, it's the cheap caps that are at fault, sometimes taking the silicon with them as they short out. The unit is now working.
As an added note, I understand that there is a Radio Shack branded version of the HD3150 as well.

Jan 05, 2009 | Pbi HD3150 DTV Receiver

1 Answer

Faulty line stage sv2918 sansui tv

Can you please post the make and model. That would help u sto provide you with more details.


Dec 01, 2008 | TV Receivers & DVRs

3 Answers

Sharp TV 21" screen with a switch mode power supply.

i have a tv receiver with a problem of no power going to the whole system thiis transistor c3807 and connected to bigger transistor c4458 are gone together with connecting diodes.any solution please?

Sep 19, 2008 | TV Receivers & DVRs

2 Answers

Directv h20 receiver has low volyage to the lnb.

Check inside the receiver for a defective LM317 IC or a TIP42C transistor, but before that you should check for proper voltage from the power supply to that IC.
LM317/TIP42C control the switching of voltages that power up the LNB, you should be getting 14 volts for vertical channels and 18 volts for horizontal.
Good Luck.

Mar 08, 2008 | Philips DIRECTV H20 DTV Receiver

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