Question about Insignia NS-LCD47HD-09 47 in. LCD TV

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Insignia ns-lcd47hd09 i check voltages again solid 5v stand by and 5v on but 12v and 24v are not holding raise to 36v then OL disconnected every thing still same problem any suggestions about cause thanx.

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It means the feedback circuits for regulating the 12/24vdc is not working, use 12v car bulb (1157) to load down the 12vdc supply and two 1157 is series to load down the 24vdc power supply and see it if still rises up, the stange thing is that you said it rises to 36vdc (12 + 24 = 36), is it being measure correctly?

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Posted on Sep 07, 2010

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I bought a pride wrangler mobility scooter. Did not move could hear a click coming from left motor. took right motor off and tore it down. It was all glazed over.

If two 24v batteries are the standard fitment it isn't likely it would be fitted with a 36v motor - unless some bright person fitted the wrong one...

I am not sure what you mean by "glazed over" unless it is the commutator you refer to? A commutator made from quality materials and fitted with brushes made from the correct grade of carbon or copper/carbon and being run at approx. the correct voltage is likely to become well polished and may become carbon black in colour but that is without detriment.
It is permissible to clean the commutator. I find spinning the armature in a drill and using a fine emery cloth is adequate.

Once reassembled the motor can be connected directly to 24 volts for testing.

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What are the volts outputs of power supply?

Hi Jhun,
As a general rule as soon as you switch on the TV, the power supply must produce stand by (sb) 5V or 3.5V as per the TV's design. Next, when you give power on command, the power supply should produce power on 5V or 3.5V, 12V and 24V or some other voltages as per the TV's design. All this is printed on the power supply pcb in most TV sets. I hope this helps.

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This is a common problem. You can try to get one from the supplier but you can also search the internet for a universal replacement

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you need to check weather the power supply has complete output dc voltages 5v stand by, 5v detect 12v-16v for audio and tuner and 24v for back light. if just only an stand by voltage, the cause is either the power supply failed or the main board detect an error in the inverter board .

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My philips lcd tv does not turn on, it just blinks for 5 times and then nothing... what could be the problem?

good day if the tv won't power up then just only a blinking light from the indicator, you will need to check the power supply first. you can apply the visual checking usually bulging capacitors at the secondary filter capacitor of the power supply they are leak which need replacement. sample of bulged capacitor . you can find replacement at now after you replaced defective capacitors turn on the tv unit then check all the out put voltage if normal the 5v stand by. 5v switched, 12v, and 24v for inverter ballast now if those voltage are stable i'm pretty sure your tv unit will working fine.

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My computer just died the morning. I removed the

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3 Answers

I have a NS-LCD37-09 tv. No picture or backlight

Your main board is faulty. I've done several of these but haven't been able to figure out which component is actually bad these yet. I've simply had to replace the board itself, and it fixes it every time. One thing you can do to get your backlights to come on (and so you know I'm not Jive'n you) Is unplug the three wire bundle that spans from power supply to main board. This will usually make the backlights fire up. I even had one that after I left it that way for a minute (with the backlight on) it suddenly started working again! But this was short lived. :-(
One time I even tried recapping the entire main to see it that would fix it. It did not. I think it might be something to do with the small chip labeled SL37HA37. It's a 16 legged bastard near the 3-wire plug I told you to pull. It's that or possibly the bigger IC near it that has a heat sink on it. The ball grid array solder joints may be faulty. Just guesses, if any smart guys out there figure this one out, be sure to tell the rest of us please!
Thanks, Chris Boise LCD

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