Question about Harman Kardon AVR 25 MKII

1 Answer

Unit wont turn on

The unit has power. The power light comes on and is orange. There is power to the unswitched outlet on the back. When you press the power button nothing happens. Sometimes I get a clicking sound from a brown box that is maybe on a power board inside the unit ( i am not sure what the board is called ) the power cord is connected to this board.

Posted by on

  • jepenny616 Feb 18, 2008

    All the fuses are good so I guess i am looking to replace the power transformer. Would that be the brown box that I would be hearing the clicking noise from?

  • martiandbill Nov 03, 2008

    I have the same problem. My unit is Model AVR 25II not AVR 25 MKII. I don’t know if that makes a difference. Is there somewhere that I can measure the power supply/transformer voltages (and what are the levels I should see?) that will help determine the problem? Also, where exactly is the internal transformer fuse located? Is there schematics available for this unit, especially the power supply area? Thanks for your help.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,512 Answers

.Hi jepenny

The board you are looking at is the standby cct and power switching PCB. It sounds like that is working, so you have probably lost power to the transformer primary or the transformer is open circuit. Check for blown fuses and replace with exact same type and rating.

Be sure to unplug at the wall before touching any internals!!

If you can find no blown fuses, the power transformer may have failed. Good luck, get back to me here is you need any more advice. Thanks for using "FixYa"

regards
Graeme

Posted on Feb 18, 2008

  • Graeme Ross
    Graeme Ross Feb 18, 2008

    The power transformer is the single largest and heaviest part in the amp. There is often a second small power transformer that is used to create the standby power. This is what is powering up the relay you here clicking, and the microprocessor that controls operation of the unit. You really need to be sure the transformer is faulty before just replacing it. Most power transformer have an internal thermal fuse that is notorious for failing. This may be your problem here, but if you are not that familiar with mains voltage power circuits, I strongly recommend you get somebody electrically savvy to look at the amp for you. I can talk them through replacing the thermal fuse inside the transformer for you.



    REMEMBER mains voltages can kill you.


  • thad61 Sep 12, 2011

    My AVR 25 began display these behaviors yesterday. I am "familiar with mains voltage power circuit" (BSEE) and would be interesting in your explanations on how to replace the "thermal fuse" or if this indeed was the problem.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Unit shut off. Why doesn't it turn back on?


Unswitched power has nothing to do with the power supply of the receiver. Look for blown fuses or a failed component on the power supply.

Feb 20, 2016 | Denon DRA-545R AM FM Stereo Receiver

1 Answer

Green light wont come on


Is unit running? Orange switch - is that the fast freeze switch? If on and running, green light faulty. If nothing happening, start with fuse, test the switch and make sure power is to the thermostat.

Apr 04, 2014 | Freezers

1 Answer

Denon dra 25 no power


John,
If you have a multi meter then unpug from mains supply.With meter
on "ohms" range check the following:-
Fuse F501 (and F502 if mult-voltage model)
yellow to white on mains transformer this should show some resistance.If you have a mult-voltage model check
brown to gray and orange to white. Both should show some resistance, if not your mains transformer has an open circuit primary winding.....

Mar 03, 2014 | Audio Players & Recorders

2 Answers

MY MEMOREX DVD PLAYER suddenly WONT TURN ON?


Unplug power cord, wait 30 sec. Plug back in. Worked 4 me

Mar 20, 2011 | Memorex MVD2042 DVD Player

1 Answer

Orange light 3 flashing



Check your power supply cables Your power supply cables may not be fully secured. Let's unplug and reconnect your power supply
  1. Disconnect the power cord from the back of your console. Unplug the power cord from the wall outlet and the power supply unit.
    Reconnect the power cord to the console. Then plug the power cord back into the wall outlet and the power supply unit
  2. Make sure that all three connections are firmly secured.
  3. Turn your console back on.

Check the light on the power supply. If this solution worked, your power supply light will be green

Dec 29, 2010 | Microsoft Xbox 360 Console

1 Answer

Blinking orange light on hp 932c


Solution

  1. Check to ensure that the top access door is firmly closed.
  2. If the light continues to blink, open the top access door. When the top access door is opened, the print cradle moves so the yellow arrow on top of the cradle points to a drawing of a cartridge. Each drawing describes a symptom.

Solution two:


  1. Turn the printer off. Unplug the power cord from the back of the printer. Unplug the power cord from the wall outlet.
  2. Wait 30 seconds. Plug in the power cord to the wall outlet. Plug in the power cord to the back of the printer.
  3. Turn the printer on.
Solution three:

The print cartridge carriage is stuck.

Solution

1. Open the top access door on the printer.

2. Remove the ink cartridges.

3. Turn the printer off, then on again.

4. Replace the ink cartridges.

5. Close the top access door.

Solution Four:

Issue

The 2-Sided Printing Module is installed incorrectly, not at all, or the back access door is unlocked or open.

Solution

1. Turn the knob on the rear access door of the printer counter-clockwise, and remove the door.

c00179776.jpg

2. Insert the module into the back of the printer.

c00179777.jpg

3. If the lights remain on, remove the 2-Sided Printing Module by pressing in the buttons on the ends of the unit.

4. Re-install the 2-Sided Printing Module by pushing the unit back into the printer without pressing the buttons, until it snaps firmly into place.

Jun 17, 2009 | HP DeskJet 932c InkJet Printer

1 Answer

Connecting a reciever to an amps unswitched ac outlet


Its safe to connect your receiver to amplifier's AC socket / outlet. These units has 2 type of AC sockets, Switched and Unswithced. Switched AC outlet can be On-Off by unit itself.
Feel free to ask any more question.

Sep 06, 2008 | Audio Players & Recorders

1 Answer

P-301 onkyo pre-amp


Hi juicer, If you use the switched outlet, then everything will be turned on/off when you operate the preamp power switch. Use the unswitched, then you have to turn off each unit separately. You choose which one you want. It wont matter.

What connection do you intend to use to connect the LBT zx6 to the Onkyo preamp??

Mar 20, 2008 | Audio Players & Recorders

2 Answers

Lamp will not come on


try pressing and holding the enter button on the projector for about 30 seconds - this resets it. It worked for me!!

Feb 10, 2008 | NEC VT460 Multimedia Projector

Not finding what you are looking for?
Audio Players & Recorders Logo

739 people viewed this question

Ask a Question

Usually answered in minutes!

Top Harman Kardon Audio Players & Recorders Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Carlos L. Burgos
Carlos L. Burgos

Level 2 Expert

618 Answers

The Knight
The Knight

Level 3 Expert

72670 Answers

Are you a Harman Kardon Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...