Question about Denon AVR-1500

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Power switch failure?

Red LED appears when AVR1500 is plugged in, but power switch does not bring up menus. Large card inside blocks interior view of switch. Troubleshooting help? Do I have to take the card out or are there other things I can do to troubleshoot?

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Lg LCD TV power up issue


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://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
Normally continious flashes of standby LED indicates a main board failure. Anyway, count the number of blinks as stated above, and make sure about the fault. Contact any service technician.

Sep 16, 2014 | Televison & Video

1 Answer

Why won't my Toshiba 26HL84 tv power on?


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. Viewing it in "Mosaic" or "Magazine" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

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1 Answer

Television colour flash fault


Hi Nathan
Contact the authorized service center. 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 stage 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, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given.

Mar 08, 2014 | Televison & Video

1 Answer

I am going to be fitting a new motherboard, and I am worried about fitting in the power and the wires? Any advice??


There are only a few things that must be carefully observed when changing out motherboards. The first is to ensure that the mounting lugs match up with the mounting holes on the new board. Remove any that don't, otherwise they may short out the motherboard. The new motherboard will come with a book that will show the external connections that must be made from the case to the motherboard. Most cases have labeled plugs that will correspond to the information in the manual. There are two plugs that can be confused - Power Switch and Power LED. Power switch is used to turn on the machine, Power LED goes to the green light on the front of the case. Alos, the HDD LED and Power LED connections are polarized, meaning they have a + and a - wire. The Power LED wires on most cases will be green and white with the green wire being the +. The HDD wires on most cases will be Red and White with the Red being the +. If you get them reversed, it will not harm the machine, but the LED will not work and you will have to turn the plug around. The plugs for the power switch, reset switch and speaker (optional) are not position dependent and cannot be installed backwards. The large power connector to the motherboard is keyed and cannot be installed backward. They can, however be very difficult to connect fully and may required forceful pressure to seat. If this is the case, place something firm, but non-conductive under the edge of the motherboard below the socket to prevent cracking the motherboard. Also, while this may seem silly, some people accidentally do it, so I'll say it here, do NOT have the power supply plugged in when making any connections to the motherboard or when installing or removing any expansion cards.

Jan 13, 2012 | ASUS P5GC-MX/1333 Motherboard

1 Answer

I have an MS-7502VER:1.2 motherboard and i cannot find wher to plug the power switch into


Hi scouts692

The Front Panel Header Pin arrangement for this motherboard is unusual, in that the header only appears to have 8 pins in a single column rather 2 parallel columns of 6 Pins with 1 blank, as most conventional motherboards do.

Pin 1 is POWER SWITCH orange or red (PWR SW 1)
Pin 2 is POWER SWITCH white or black (PWR SW 2)
Pin 3 is POWER LAD + (PWR LED -)
Pin 4 is POWER LED - (PWR LED +)
Pin 5 is HARD DRIVE LED - (HD LED -)
Pin 6 is HARD DRIVE LED + (HD LED +)
Pin 7 is RESET SWITCH blue or green (RST SW/RST 1)
Pin 8 is RESET SWITCH white or black (RST SW/RST 2)

Please refer to a PDF of the Motherboard Manual for additional information about the setup of this motherboard (the relevant page for the Front Panel Header is page 17/Section 2-13)

hope this helps.

If this Answer goes some way towards helping to resolve your Query, Problem or Fault, please take the time to Rate it. Doing so helps Solution Providers, like me, better understand the needs and the point of view of Askers, like you, and guides us in exploring the best ways to provide the most comprehensive, useful and high quality Responses and Solutions we can. If you need further help, please do not hesitate to post another Question or add a Comment to this Question.
Thanks for using FixYa.

Sep 17, 2011 | Intel Motherboard

1 Answer

The power at the start is red and not green how can i know what is the problem is it the power supply or others please answer me.....


Power LED flashes Red,
once every two seconds.
OR
Power LED flashes Red four
times, once every second,
followed by a two second
pause.

Would this be the symptom?

If so, then yes, the Power Supply is bad.

What causes this?

1) A large percentage is due directly to the fact, that the computer is dirty inside, as well as the inside of the Power Supply.

2) A smaller percentage is that the Power Supply is a low quality unit, installed by the computer manufacturer.

Computer unplugged from power, computer case open, anti-Static precautions observed.

Using a can of compressed air for computers on a regular basis as needed, would help prevent Power Supply failure.

Is the dc5000 the Small Form Factor, or the Micro-Tower, style?
(SFF style looks like a Pizza Box)

Will look up Power Supply replacement for you if you wish, and information on replacing it.
Simply reply in a Comment.

Jun 01, 2010 | HP Compaq dc5000 PC Desktop

1 Answer

My d530 minitower powers off unexpectedly and red lights starts to blink on System's LED//


Hi Kindly let me know how many times the red light blinks
Condition Code Service Actions Processor thermal protection activated. Power LED blinks red twice, once a second, followed by a two second pause.
  1. Make sure the computer air vents are not blocked and that the cooling fan is running.
  2. Open the hood, press the power button, and see if the processor fan spins. If the fan is not spinning, make sure the fan cable is plugged into the cable header on the system board, and that the fan is properly installed and seated.
  3. If the fan is plugged in and seated properly, but is still not spinning, replace the processor fan.
  4. Reseat the processor heatsink and make sure the fan assembly is attached to the heatsink properly.
Processor is not installed. Power LED blinks red three times, once a second, followed by a two second pause.
NOTE: This condition indicates a missing or improperly installed processor, not a defective one.

Make sure there is a processor in the system. Reseat the processor and verify that it is installed properly. Power failure (power supply is overloaded) Power LED blinks red four times, once a second, followed by a two second pause.
  1. Check the voltage selector, located on the rear of the power supply, is set to the correct voltage (the correct setting depends on the region).
  2. Open the hood and make sure the 4-wire power supply cable is fully connected to the power connector on the system board.
  3. Check if a device is causing the problem by removing all attached devices (such as disk drives and expansion cards), then power on the system. If the system enters POST, power off and replace one device at a time, repeating the procedure until the system power failure reoccurs. Replace the device that caused the failure, then replace each of the other devices and confirm that they are functioning properly.
  4. If you cannot isolate the failure to a specific device in the previous step, replace the power supply. **
  5. Replace the system board.*
Pre-video memory error. Power LED blinks red five times, once a second, followed by a two second pause, and five simultaneous beeps are sounded
  1. Reseat the DIMMs in the memory slots on the system board, then power on the system.
  2. Replace the DIMMs one at a time to isolate the faulty module.
  3. Replace 3rd-party memory with HP memory.
  4. Replace the system board.*
Pre-video graphics error. Power LED blinks red six times, once every second, followed by a two second pause, and six simultaneous beeps are sounded. For systems with a graphic card:

  1. Reseat the graphics card and then power on the system.
  2. Replace the graphics card.
  3. Replace the system board.*


For systems with integrated (on-board) graphics, replace the system board. PCA (system board) failure. ROM detected failure prior to video. Power LED blinks red seven times, once a second, followed by a two second pause, and seven simultaneous beeps are sounded. Replace the system board. Invalid ROM based on bad checksum Power LED blinks red eight times, once a second, followed by a two second pause, and eight simultaneous beeps are sounded.
  1. Reflash the ROM using a ROMPaq diskette.
  2. Replace the system board.*
System does not power on. No beeps or blinks since the system is not functioning. Press and hold the power button for less than four seconds. Perform the following steps depending on whether the hard drive LED turns green.

If the hard drive LED turns green, then:

  1. Make sure the voltage selector (which is located on the back of the power supply) is set to the correct voltage for your region.
  2. Remove the expansion cards one at a time until the 3.3V auxiliary light on the system board turns on. If removing a card turns the light on, replace the card and then see if the system works.
  3. Replace the system board.*


If the hard drive LED does not turn green, then:

  1. Make sure the computer is plugged into a functioning AC power outlet.
  2. Open the hood and make sure the power button is securely fastened in the power harness and that the harness is connected properly to the power connector on the system board. In other words, make sure that the power button is making contact with the power circuit.
  3. Make sure the power supply cables are connected properly to the power connectors on the system board.
  4. Check to see if the 3.3V auxiliary light on the system board is not turned on, replace the power supply. **
  5. Replace the system board.*

Dec 29, 2009 | HP Compaq d530 Convertible Minitower PC...

1 Answer

Mitsubishi WD-52725 picture problem


Good Day;

1. Red status LED, self-diagnosis error 44, check for open F9A06 on the Power PCB part # 283P128050 on the Power PCB 2. Red lamp LED, self diagnosis error 34. Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if missing replace the Power PCB part # 930B921002 3. LED stops blinking after 70 seconds of plug in but will not power on. This model is equipped with a keyboard lock feature, this can be mistaken as a no power condition. To unlock the keyboard press and hold the "menu" button on the front panel for 10 seconds 4. LED stops blinking after 70 seconds of plug in but will not power on. Check for 3.2 volts DC at connector LE pin 3 and 4 on the Control PCB, if low suspect problems with the switches/buttons on the Control PCB part # 935D776001 5. LED stops blinking after 70 seconds of plug in but will not power on. Keyboard is not locked and key inputs at connector LE pin 3 and 4 check good. Suspect the E2P PCB part # 934C121001 6. (LED does not stop blinking after plug in) Disconnect the USB connector from the card reader to the front from the Chassis, if the LED stops blinking after 70 seconds replace the Card Reader part # 299P271010. 7. (LED does not stop blinking after plug in) Disconnecting the USB connector from the Card Reader did not help. Remove connector FC from the FMT PCB and plug the unit in, if the LED stops blinking after 70 seconds with FC removed suspect a problem on the FMT PCB (part # 930B924002), if the LED keeps blinking with connector FC removed suspect a problem on the DM PCB (part # 934C116002). 8. (LED does not stop blinking after plug in) On the DM PCB (part # 934C116002) check C81A2, C81A3, C81B3 and C81B4 (1000 UFD, 16V, 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C). See Service Tip VS-78A 9. (LED does not stop blinking after plug in) On the FMT PCB (part # 930B924002) check C8F19, C8F21, C8F22, and C8F27 (16V 1000 UFD 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C). Good Luck, big irish.

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hard to diagnose with out voltage measurements, first thing i would do is call insurance company and tell them you had a brown out and then the tv went out.
a common problem with this tv is convergence amp ic's
http://www.hdtvoice.com/voice/showthread.php?t=28929

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