Question about Harman Kardon AVR 125 Receiver

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HK avr125 5.1, no display, no functions.

My HK avr125 has no display and no functions except the input indicators and the surround mode indicators light up. There is no functions at all, I tried to reset the unit but that did not help.
I did find that there is no -30 volts going to IC74. My question is how is the -30 volts being generated at Q901.

Jeffrey Williams

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  • jimmygourd Sep 13, 2008

    I have the same issue with my avr125. Just stopped working at all. Have you come up with a solution yet?

  • jb16rd Apr 14, 2009

    I have the same problem. Just no display but the unit does turn on.

    I found that the C901 cap on the power supply is scorched but I could barely tell but it is for sure toast. I am going to replace it and post here how it turned out

    Jerry

  • ledge kastner
    ledge kastner Jan 23, 2017

    30 volts power supply problem.

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Same problem. C901 on the vertically-mounted input board next to the power supply transformer was burned. Replaced with ceramic cap from RS with same specs. Still did not work. Talked to Jeb, great guy at HK tech support. He suggested that R901 would probably be blown and maybe 902 also. These are flame-proof resistors and do not show damage. Tested with multimeter and Jeb was spot on. Replaced 1w resistors with 5w (all RS had) at same resistance. Works great.

Posted on Sep 27, 2009

  • jb16rd Dec 21, 2010

    AND you my friend are spot on also...
    both R901 and R902 showed open when reading with a meter. so they were both bad but looked good. I replaced them with what they were (.47ohm) and the cap that was visibly blown and everything is back working and in good order and I am watching TV again in surround..
    Thank you my friend.
    I didn't see your post til just this morning when I decided to start looking again at getting it fixed and ran across my old post.. I wonder why it never emailed me???
    All well, it's fixed now... Thanks again
    Jerry

  • Laser Plus Computers Mar 20, 2011

    i had a dirty switch on transformer bd. it is a reset switch. unit powerd on then off. lost all presets. contact cleaner in switch repaired my avr 230. glad it was not the regulator module like i thought. just a dirty switch causing erractic behavior. resetting tone button did not work.also tryed like 5 times to clear memory. it sings again!!

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Hk 230 lost presets, erractic. will not power on goes off quick. . last time sprayed contact cleaner all connectors & bd. connections & it worked. A year later this time the same symtoms. switch on the module connects to transformer caused the receiver to reset. & lose all presets. it is a reset switch i also found out after i fixed it.. sprayed contact cleaner in switch that & it sings again. thank you to the person that suggested this in some site..mine is fixed!!!!

Posted on Mar 20, 2011

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I have a Marantz SR 8001. The front display lights went completely out, but the blue lights over the selector knob, volume knob, and the HDMI blue light comes on. I was setting up a Logitech 1100 remote...



Hello,
You have a nice piece of Stereo...I believe you have mistakenly selected the" display mode OFF" function..,Here is the info that you can reactivate it..
If you need a soft User Manual here is the link for it too..

Take care and please
Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)...please insert some words in "
My Testimonials "
Hope this helps!

------------------
" display mode OFF"

You can select the display mode for the front display
of the SR7001.To select this mode, press the DISPLAY on the remote control or the front panel.When this button is pressed, the display mode is switched in the following sequence.Input Mode ? Surround Mode ? Auto display OFF ? Display OFF ? Normal Mode ? Input Mode Normal Mode: Displays the selected input function. If the function has been renamed using the Function Rename feature (see page 26), the renamed name appears on the display. Input Mode: Displays the input mode set via the Function Input Setup feature (see page 25). Surround Mode: Displays the status of the selected surround mode. Auto Display Off mode: The display is off. But, if you make a change to the unit such as the input or surround mode, the display will show that change, then go back to off after about 3 seconds. When changing the volume, it is not displayed. Display Off mode: The display is off completely. Note: • Only the DISP indicator will be illuminated on thefront display in display off condition
http://www.scribd.com/doc/53431794/Marantz-SR-8001-Owners-Manual

Jun 23, 2011 | Marantz SR8001

Tip

ERROR CODE AND SERVICE MODE


Service tool modeHow to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
Display of SOS History
SOS History (Number of LED blinking) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for (3sec).
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.Exit
1. Disconnect the AC cord from wall outlet.
Hotel mode
1. Purpose
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu In order to display the Hotel mode setup menu, please enter the following command(within 2 second).
[TV] : Vol. [Down] + [REMOTE] : INPUT (3 times)
Then, the Hotel mode setup menu is displayed.
3. To exit the Hotel mode setup menu Disconnect AC power cord from wall outlet.
Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timingCheck of the IIC bus linesHow to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.
Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.

FOR MODE DETAILS CHECK THE FOLLOWING LINK

www.electro-medical.blogspot.com
google.com/+AjinGopakumar

USE SEARCH TAB TO FIND MODELS OR USE DROP DOWN MENU

on Jun 30, 2015 | Panasonic Tc-50ps14 Tv Power Supply Board...

1 Answer

When i press the power button to turn off monitor, i get a power button lockout message. how do i unlock the power button


I did not see anything regarding to the Power locked out function, may be it's time to call HP. Please post back what you find out from HP.
I look at HP WEBSITE: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01632269&tmp_track_link=ot_recdoc/c01643091/en_us/c01632269/loc:1&lc=en&dlc=en&cc=us&product=3770762


Locking OSD settings
When the OSD is locked, settings cannot be changed in the OSD menu. The OSD functionality is enabled or disabled by pressing the Menu button and holding it for 10 seconds. Upon disabling the OSD, an OSD Lock-out message is displayed for 10 seconds. When the OSD is locked and an OSD menu button is pressed, the OSD Lock-out message is displayed for an additional 10 seconds. When the OSD is locked, pressing the OSD menu button for 10 seconds unlocks the OSD and displays the main menu. Identifying monitor conditions
Special messages display on the monitor screen for the following monitor conditions:
  • Input Signal Out of Range : Indicates the monitor does not support the input signal because the resolution and/or refresh rate are set higher than the monitor supports. Recommended refresh rates are as follows:
    • For the w1858 monitor: 1366 x 768 @ 60 Hz.
    • For the w2338h monitor: 1920 x 1080 @ 60 Hz.
  • Monitor Going to Sleep : Indicates the screen display is entering a sleep mode.
  • Check Video Cable : Indicates a video input cable is not properly connected to the computer or monitor.
  • OSD Lock-out : When the OSD is locked, the warning message OSD Lock displays for 10 seconds.
  • No Input Signal : Indicates the monitor is not receiving a video signal from the computer on the monitor video input connector. Check whether the computer or input signal source is off or in the power-save mode.
  • Auto Adjustment in Progress : Indicates the auto-adjustment function is active and in process.

May 13, 2010 | Computers & Internet

1 Answer

Fiber Optic input


No gots. The 3485 is pre-digital stereo-only.

From the manual, page 19

"You may have observed that the HK 3485 is not equipped with digital audio inputs or surround sound decoding. If you prefer the complete home theater experience, you may wish to consider purchasing a fullfeatured Harman Kardon AVR Series audio/video receiver. However, we hope you will find that using a DVD player with the HK 3485 in smaller settings, such as a bedroom or den, surpasses the audio performance of most televisions, including those with onboard stereo speakers."

Apr 13, 2010 | Harman Kardon AVR 240 Receiver

1 Answer

My surround sound speakers don't work. No power


LCD will display which speakers are active. And this depends on 2 things: the source signal and decoder mode.
If source signal is stereo, only front L+R speakers are used. For 5.1 signal (for example DVD over HDMI / optical/coax spdif) all speakers installed (which are not set to None) are used.
To listen to stereo input signal using all speakers, switch decoder to enhancer mode.

Feb 24, 2010 | Yamaha RX-V457 Receiver

1 Answer

Sony STR DE845: rear speakers not working, three fronts are OK.


The rear amp is malfunctioning (duh). Take it to a tech for a real diagnosis.

Sep 05, 2009 | Sony STR-DE845 Receiver

1 Answer

Can not access menu or input functions


Hi rduncan27,
I will be happy to help. 88% of LCD tv problems are with the backlight, the symptoms you described indicate a probable inverter malfunction. Lets do a simple test to check the functionality.
  1. Get the tv to a point that it is producing sound.
  2. Take a flashlight and shine it on the screen.
  3. Look very closely for a dark video image.
Let me know your findings and we can proceed from there.
Lone99star

Jan 26, 2009 | Memorex MLT3221 32 in. LCD TV

1 Answer

Sony STR de845, 5.1 Surround does not work. 3.2 is indicated o


3.2 IS the "5.1" mode for this receiver. 3.2 is indicating that you have 3 front channels and 2 rear channels. The ".1" is applied to all the speakers (LFE). If you read the manual on page 37, you'll see that "3.2" is displayed with either "Dolby Digital 3.2" or "DTS 3.2". The little icons of the speakers in the display window will show you which channels are active. The bottom line is as long as you see the blue light, it's decoding multi-channel discreet surround sound (at least 5.1).

Nov 22, 2008 | Sony STR-DE845 Receiver

1 Answer

PROBLEM W/ CASIO fx-260 SOLAR


Sorry, but I think you misunderstood what the manual says. See the not on the screen capture.
True the sentence is not very clear, but what it means is the following:
All modes (except COMP) will have an indicator (with the appropriate labeling) displayed. When in COMP mode the COMP indicator is not displayed.

The truth of the matter is that computation- wise you have two MODES only : the general COMPutational mode and the Standard Deviation (SD Statistics) MODE. These two are incompatible because the key layout is different.

But to compute trig functions
  1. calculator must not be in SD mode, hence it is in COMP mode
  2. An angle unit must be shown on display.
Read the screen capture about the MODES of this calculators. DEG,RAD, and GRAD remind the user that the angle units in trigonometric function calculations and coordinate conversions are in degrees, radians or grads. They have nothing to do with the other calculations you are doing.

874c328.jpg

You can only remove DEG by changing the angle unit to RADians or GRADs. In so doing, the new unit indicator (RAD, GRAD) will be displayed instead. There is no point worrying about the angle unit indicator unless you are performing coordinate conversions or calculating trigonometric functions or the inverse trigonometric functions.

MODE 9 cancels the FIX display format: decimal are displayed with a fixed number of decimal places (set by the user). After this key sequence the decimal display format reverts to NORM(al).

Jun 04, 2008 | Casio FX-260 Calculator

1 Answer

Speakers not working


They will only have ambient sound (not same sounds as front speakers). Also for each input (video 1, video 2, dvd, tuner, etc...) you need to choose what surround mode you would like to use via the "Listen Mode" button. There is a little pictogram in the display which indicates which speakers are in use.

Sep 12, 2007 | Arcam AVR-200 Receiver

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