Question about Hitachi 55HDS69 55 in. Plasma Television

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Plug tv in here relay click .tv will not come on when power is push.only have 5&3.3volts going to main.

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Check SMPS circuit.SMPS power transistor, switching IC etc.

Posted on Aug 27, 2010

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Posted on Jan 02, 2017

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F150 wont start don't even get lights or anything battery good but nothing else works


What year F-150 ? Do you know how to test automotive electrical circuits ? Find a electrical distribution diagram at http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Under system click electrical distribution , then under subsystem click power distribution . Click the search button ,then the blue links one at a time . Start at the battery , with a volt meter ,what's the voltage . Then check main power feeds to power distribution (fuse /relay) boxes . Under the hood , inside the vehicle etc... The first diagram shows two main 30 amp fuse in the ( BJB ) one supply's B+ to the starter relay an if you look down about 5 or 6 diagrams you will A goes to the ignition switch. The other 30 amp fuse powers the PCM power relay . Both of those if open could cause your problem . If these are ok keep looking at main power feeds etc....

Jun 13, 2017 | Cars & Trucks

1 Answer

Relay clicks when applying power. Yellow light comes on. TV is dead otherwise. Power supply is outputting +5, 12, and 24 volts Mainboard (3647-0282-0150) has +5 and 12 volts always applied. Checked...


Amber light on means standby voltage is high. IF amber light does not go white when power button is pushed the its one of two things.
A. No power on command from main board. Usually labeled PS-On. Should go high from 3.3v or maybe 5volts. If not present Main is defective.

B. If the ps-on line is going high then your problem is a defective power supply.

Oct 15, 2013 | Vizio XVT472SV 47 in. HD-Ready LCD TV

2 Answers

I have a sharp aquos lc-c4677un its not turning on at all now. When I push the power botton on the tv, the power light turns on and about 2-3sec the power and opc light start to blink and thats about it.


How are the power and opc lights blinking? Do they blink simultaneously or does one blink then the other? How many time do they blink per second? Also have you had it fixed yet? and if so what was done? I had a similar problem with my set.

Aug 06, 2011 | Sharp AQUOS LC-C4654U 46" LCD TV

4 Answers

My Sharp LC-42-D62U won't power up. The power light blinks twice, then the power light and the OPC light blink together once. any fix to this problem?


Ur Tuner signal board have problems or dead.Ur power LED light indicator stable for a few mins before the power LED light,and the OPC LED light indicators flashes?After the POWER light and OPC light indicators flashes,just push the power button again for the power recycles again.Probally have to pushes the power button 3 or 4 for power light and opc light indicators flashes,the LCD backlght will lght up and work.Sharp tv have this problems alot,very common in Sharp LCD tvs.

Apr 17, 2010 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

My Pioneer VSX-517 receiver will not power up. Have checked power cord & fuse.


good start. the next is to chech standby voltage 5 volt, that goes to the microprocessor which will enable you to turn-on the main relay(12 volt)that powers up the whole unit. so if you cannot hear a click when you push the power button the the standby transformer capacitor and the 5 volt needs to verified. if this is good the relay - 12 volt and if this is also good the micro is bad. oops-hope it doesnt come to that. the micro is located on the circuit board mounted on the faceplat-a large many pins IC.

Feb 26, 2010 | Audio Players & Recorders

3 Answers

Brake lights not working even though the brake peddle is pushed down The switch still goes in and out. Fuse box has some fuses missing. The fuse box does not have a desription on every plug of what it is...


Here are the numbers on your fuseblock and fuses coresponding to the number that is on your fuse block.
1-20 amp (yellow)
Hazard flasher
2-10 amp (red)
back up lights, A/C clutch cycling Switch
3-30 amp (green)
Power windows
4-30 amp (yellow)
A/C or heater blower motor
5-20 amp (yellow)
Panel Lights, Side marker lights, Park, Taillights, Clock & radio display Intensity, License & panel lights.
#6-10 amp (red)
Stoplight, buzzers, Anti-lock brake module
#7-15 amp (lt. Blue)
Tachometer, horn & Relay
#8-8 amp (yellow)
Power Door locks
#9-10 amp (red)
Radio
#10-10 amp (red)
Rear Wheel Anti-lock module, Turn Signals
#11-20 amp (Yellow)
Windshield wiper & washers
#12-15 amp ( LT. Blue)
Cigarette Lighter
#13-5 amp (tan)
Speed Control, warning buzzers, gauges, indicator lights
#14-5 amp (tan)
Time/delay relay & under-hood light, dome light, power mirrors, readio & clock Memory, Interior lights, reading lights
#15-blank
Not used
#16-4 amp (pink)
Radio Lights & overdrive switch light 1989-91, Cluster lights, Cigarette Lighter light & as tray light, Cluster lights, A/C & heater controls.
#17-relay
Hazard Flasher warning
#18-relay
Relay
#19-Circuit breaker
#20-relay
Turn signal Flasher
#21-buzzer
Warning
#22-Relay
Horn

Aug 04, 2009 | 1991 Dodge Dakota

1 Answer

Power light flashes five times and then nothing.


fail safe mode usually is caused by a short on your main bd. but if its a DLP or LCD projection tv to replace the lamp the door sometimes has a safety switch that will not alow a tv to turn on if the door was ajar

Mar 03, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Sharp LC-45D40U Won't Power On! Need Help!


If doesn't give error code most probably is something wrong with 5 and 3.3 volts lines. Check first the power supply and try to start the tv with all connectors removed. Let only the one between main pcb and power supply. Look for shorted voltages lines.

Apr 10, 2008 | Televison & Video

2 Answers

TV DEAD


On some models the reset is unplugging for a minute or two and plugging back up. Otherwise you have a blown fuse where the power goes in. If you decide to replace the fuse do no go over 5 amps. If the replacement fuse blows there is a short in the set and needs a repairman.

Jan 02, 2008 | Philips 19PR19 19" TV

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