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No power display on samsung model no ct 3329 v

I check the voltage regulator ok and the unit was wet once last week and could not be on and no standby power thanks ben.

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No display, sound ok


try checking, power supply board out put voltage, if abnormal may be regulator has a problem or change it , or regulator control ic..or checking capacitor leaky and change it in same value.

Dec 28, 2013 | Haier 32 in. LCD TV

1 Answer

Show all solution to d945plrn motherboard problem not powering up


PSU IS OK? You're sure? You tested the 3 main voltages coming out?

DON'T rely on; "The LED lights are on, and the fans spin, so therefore the PSU must be good.

1) If ALL the LED lights were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor uses 51 to 125 Watts of power.

With a Power Supply that has a weak voltage power rail, you will see LED's light, and fans spin; BUT not enough power to turn the Processor on.

Power Supply also needs to be plugged into motherboard to test, because you need a Load on the Power Supply.

PSU is KNOWN to be good? I mean KNOWN.
Not, "It's brand new so I know it has to be good"
Okay, moving on.

CPU OK?
How did you test it? Install on another working motherboard?

Are the Electrolytic Capacitors on the motherboard good?

http://capacitorlab.com/visible-failures/index.htm

http://www.youtube.com/watch?v=Lut7MX5Dd_A

Capacitors on the motherboard are used as Filters, and Voltage Regulators.
The ones used as Voltage Regulators are in the Motherboard Voltage Regulator Circuit,

http://www.hardwaresecrets.com/article/616

Part of what the Motherboard Voltage Regulator Circuit does, is to regulate voltage for the Processor. (CPU)

The CPU MUST have a steady, 'clean', supply of voltage, and it MUST be kept within the Processor's voltage tolerance range.
Too much, or too little, and the CPU shuts off. BIOS turns it off.

(CPU stands for Central Processing Unit. Another term used is Microprocessor, or simply Processor for short.
I know you are aware, just posting for all those who read the solution in the future)

http://downloadmirror.intel.com/15140/eng/D945PLRN_ProductGuide02_English.pdf

[Better motherboard due to the Intel Q965 motherboard chipset,

http://www.ebay.com/itm/INTEL-DQ965GF-CORE-2-DUO-LGA775-SOCKET-P-4-MOTHERBOARD-I-O-FACEPLATE-INCLUDED-/290863623024?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D5685984037376928917%26pid%3D100011%26prg%3D1005%26rk%3D1%26sd%3D330632928551%26

http://en.wikipedia.org/wiki/List_of_intel_chipsets#Core_2_chipsets

Scroll down to Q965 in left column ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Feb 18, 2013 | Intel D945PLRN Motherboard

1 Answer

I have a Samsung LN32c450 model LCD HDTV and it does not turn on. The red led in the front is on but no display or nothing. I read online a lot about the bad capacitor syndrome a lot of Samsung TV'


When you change the caps check the polarity.Check the diodes,
and the regulators, Resistors,Fuses looks like a transitors
two legs no 3 legs like the transistors get a voltmeter and read the voltage if are there, check the screen voltage.

Nov 04, 2012 | Samsung Televison & Video

1 Answer

RED FLASH AND TV URNS OFF


  • Unit is dead, No blinks - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).
  • Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.
  • One blink - not used for the self-diagnosis
  • Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.
  • Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.
  • Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505
  • Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.
  • Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
  • Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
  • Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406audio amp, PS401, and 402. On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board.

  • Nine blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).
  • Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.
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Dec 06, 2011 | Sony FD Trinitron KD-34XBR960 34" TV

1 Answer

Hi I have a Samsung Tv. Model SP50L6HXX / XSA that wont turn on. there was a week buzzing noise for the last week or two, but tv will not start up now. The lamp light flashes on the front of tv. Can you...


I suspect the B+ voltage on the power supply can't regulate the voltage needed for the lamps to run entirely. The B+ voltage regulator looks like a small black box with a tapered top. This is dangerous to replace so be careful. Once you get a new one installed this will fix the issue you are having.


Hope this helps :)

Mar 07, 2011 | Samsung HLP5685W 56" Rear Projection...

1 Answer

Lg lu20-25su1 can not turn on when i press the power on button, the power on led only flash once and gone, nothing happens, no matter plugged with battery or not


Was unit wet or dropped? Try unplugging memory and reloading it, check power at end of wiring to see if their is voltage.

Let us know ok, we will be happy to help you

Nov 23, 2009 | LG LU20 Tablet PC

1 Answer

67 votage display on generator output.


Please stop making new problem threads each time you answer, instead post a comment to one of the 5 threads you already have open for this problem. It's getting hard to follow the conversation :-)

OK, now to the problem. You say you have checked 67 volts is displayed on the generator output, I think this means that you see 67 volts on the control panel display when the generator is running. This can be several different problems:
a) a bad CT/PT module that tells the controller the wrong voltage
b) a bad A/D module inside the controller itself
c) a bad voltage regulator

Get a real DMM meter and measure the voltages at the top side of the output (large) circuit breaker of the generator. Put the black lead of the meter on the neutral wire and then measure to each of the phase wires on the circuit breaker. If you get normal voltages then you probably have a bad A/D, if you get 67 volts on all 3 phases you have some other problem.

You still haven't told me what model/spec of generator this is, look on the data sticker on the generator cabinet.

Peace,
Carl

Dec 14, 2008 | Coleman Powermate Powermate 5000W...

1 Answer

Have to replace ignitor on coleman furnace every year


The voltage regulator on the control module is sending the wrong voltage to the ignitor or the ignitor is getting wet from condensation. That ignitor should last many years. Replace the control module.

Dec 04, 2008 | Heating & Cooling

1 Answer

TV NO POWER


internal fuse, small 2 amp slow blow, check both, some times white coated inside when blows turns brown in middle, voltage spike problem

Jul 25, 2008 | Samsung Televison & Video

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