Philips (37PFLG777K/12) LED TV do not turn and do not show the Standby LED. 3,3V Standby can not be meassure.
I have checked the 3,3V Standby Voltage on the connector to the Mainboard. The Voltage on the Average Voltage area can i measure. The DC Voltage side i can measure on some components. An array of capacitors do not have voltages. There are in the near of the connector to the mainboard of the power supply board. I have found a component that looks like a resistor. But it is not a resistor it has a transparent body and their are 3 rings on it. red black and blue. Is this a varistor? If i solder it out and measure it, i can not measure a transit or a resistant. Is it possible that this component is damaged?
I hope you can help me.
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Re: Philips (37PFLG777K/12) LED TV do not turn and do not...
The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Testimonial: "Thank you very much for your help.
Do you know if it possible that typically components on this and on other boards that have an defect. Many people have the same problem that the TV's going dead. That means that Philips maybe construct one or more components that becomes after time a defect."
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What is the brand name of your TV? 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. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. Counting of number of blinks to Philips TVs is entirely different to that of other brand TVs. It is not a direct count procedure. The site have details about how to count the number of LED blinks [Fault Codes] to Philips brand TVs are given; along with details of the faulty circuit location.
Tv has no picture, standby led light, output voltage from spms is 17,17,5,5 instead of 12, 12, 5, 5. Signal on/of from main board is ok, 3 volts. I do not know whether the voltage 17,17 culprit or it is ok. In the dark I can not see any pictures
There is a error in TV.Count how many times blinking the red light.
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
- 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
- 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
Six blinks - No Horizontal
(H STOP), no raster, goes to the blinking self-diagnosis function
immediately. Check C515 & 516 and the jungle IC, IC206.
- High voltage shutdown. The high voltage has exceeded 33k and the unit
goes immediately into safety shutdown. Check power supply regulation
and horizontal circuits.
- Problem with the audio (AUDIO), unit goes to standby and blinks the
self-diagnosis code. Check IC406 audio 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.
- 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
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" boards
The remote control will not operate the TV when the TV is in the OFF mode (No LED lit on front bezel). To change the mode from OFF to STANDBY or ON, press the POWER button on the side of the TV. Once the POWER button is pressed, the LED will change to either red to indicate STANDBY or green to indicate ON, whichever mode the TV was in prior to being turned off with the TV POWER button.
By pressing the POWER button on the side of the TV, the mode will toggle from OFF to either STANDBY or ON. If the POWER button is pressed and then the LED on the bezel is red, the TV is in STANDBY mode and will need to be turned on using the remote control. If the POWER button is pressed and then the LED on the bezel is green, the TV is ON.
5V Stand-By Indicator LED The power supply will always supply a 5V standby voltage to your motherboard so that it can power on via for example Wake On Lan technology. This LED shows that your power supply is supplying this standby voltage to your motherboard.n :D
You may need to replace your power supply, if the LED is flashing, it's not supplying the power the motherboard needs.
The problem is in the standby power supply. the standby power supply generates the 9 volts and the 5 volts requird by the tv. If you measure the 9 volts source, with only the red light on, the correct voltage is 9 volts. However if the 9 volt measures 6.5 to 7 volts it is too low and the startup relays cannot operate. My set is a model 42FR9954/17S. In this set if capicator, 2603, is heated the voltage climbs to 9 volts and the relays work. If cold air is applied to the capicator the relays fail to operate. Replace capacitor 2503 and the problen is fixed. This capicator is: 47 Ufd, rated @ 450 volts, and is 20%.
A qualified tech will need to practice visual
acuity technique! Look at power supply circuit
for signs of stress,dis-coloration and/or bad
connects.Check for bad 47mf/25v cap in area
of stress.Replace BC-327-25 xistor w/BC-328 and
replace BC-337-25 w/BC-338,if present in your
set's chassis style.
The Tv clicks and CRT comes on for a second before it goes into the protection shutdown. The LED flashes 6 times and sometimes 7 times. I checked the voltage accross IC501 as suggested in other posts and one of the votages is higher thatn it should be. thesymptom for the 6 LEd flashes suggest overscurrent and bad IC 504. I don't know how to meassure the voltage on the IC504 however as it has 4 prongs instead of three. My question is if there is something that may be causing this. Please help! I can offer you the Service manual for the KV series TV in return...
you seem to be a techanical person
so answer is purely technical.
Clicks but crt does not turn on
1 check whether power supply out put is ok.by disconnecting h/output
2 if it is ok check hor. section that is eht is ok or not as without eht crt will not glow.
check crt supply &loose connection in crt base.