How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Richard Your Own Question

Richard
Richard, Engineer
Category: Electronics
Satisfied Customers: 32223
Experience:  Electronics Engineer
32989067
Type Your Electronics Question Here...
Richard is online now

I own a Denon DM37DAB bougtht on 2008. Replacing the

Resolved Question:

Hi - I own a Denon DM37DAB bougtht on 2008.
Replacing the equipment after decorating, the CD player will now play for anything from 10 secs. to 2 minutes and then the power cuts off. For a split second before the power goes off, the message "V PROT" appears. We have no idea what this means. Can you explain?
We have played different CDs and used another power supply with no success.
***** *****
Submitted: 9 months ago.
Category: Electronics
Expert:  Richard replied 9 months ago.
Hi there and welcomeThis means it has gone into protection mode and is caused by shorted speaker outputs inside the unit, a shorted speaker wire, or a blown speaker connected to the unit.Unplug the unit from the power socket for 10 minutes, and disconnect all of the speakers and anything else connected to it. Then when you plug it back in, press and hold the power button at the same time for 10 seconds then release.If the unit starts up normally start connecting the speakers one at a time (shutting the power down before connecting each one), until one of the speakers causes the indicator to come on. This speaker is faulty and would need to be replaced.Let me know the results please
Customer: replied 9 months ago.
Hi - we have followed your instructions without success. Just a query - when you talk about shutting down the power before connecting the speakers, do you mean from the power source at the wall or the standby button on the equipment?
Expert:  Richard replied 9 months ago.
From the power source on the wall, is this what you did Brian?
Customer: replied 9 months ago.
Yes
Expert:  Richard replied 9 months ago.
Thanks, ***** ***** know it needs the output transistors replaced inside the unit. They are not user-replaceable as they are PCB mounted, and thermally coupled to a heatsink. In this case, the unit is in need of service. Below are the two locations I know of that are very good at Denon repair. At the bottom of the list is the address and phone number for Denon UK, who may also be able to recommend someone in your area. http://www.londonsound.org/repairs.htm http://www.4rfv.co.uk/brieflisting.asp?scategory=263&company=6598 Denon UKFirst Floor Imperial House4-10 Donegall Square EastBelfastMiddlesexBT1 5HDTel: 02890279830Fax: 02890312643If you would like any additional information or assistance, please do not hesitate to let me know. Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated. Thank you
Richard, Engineer
Category: Electronics
Satisfied Customers: 32223
Experience: Electronics Engineer
Richard and 2 other Electronics Specialists are ready to help you

What Customers are Saying:

 
 
 
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
< Previous | Next >
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
 
 
 

Meet The Experts:

 
 
 
  • Eng. Andres

    Eng. Andres

    Engineer

    Satisfied Customers:

    68
    Electronic Eng. Electronics Specialist. Circuit designer
< Previous | Next >
  • http://ww2.justanswer.com/uploads/RA/ratonxi/2012-1-3_151146_1.64x64.png Eng. Andres's Avatar

    Eng. Andres

    Engineer

    Satisfied Customers:

    68
    Electronic Eng. Electronics Specialist. Circuit designer
  • http://ww2.justanswer.com/uploads/JO/JonTech/2011-10-25_111835_A2c.64x64.jpg Jon-Tech's Avatar

    Jon-Tech

    Technician

    Satisfied Customers:

    1
    ASET Electronics
  • http://ww2.justanswer.com/uploads/ET/eter/2016-7-21_174524_pete.64x64.jpg Pete's Avatar

    Pete

    Engineer

    Satisfied Customers:

    789
    Over 16 years of experience in the Electronics and IT industries.
  • http://ww2.justanswer.com/uploads/SH/ShahidSony/2013-9-1_3122_Shahidb1a.64x64.jpg Shahid's Avatar

    Shahid

    Technician

    Satisfied Customers:

    575
    I have been repairing electronic gear since 1993 as a qualified Sony tech
  • http://ww2.justanswer.com/uploads/SE/SelectTronix/2013-12-28_22514_clrepair.64x64.jpg Carl L's Avatar

    Carl L

    Technician

    Satisfied Customers:

    68
    13+ Years of Computer and Electronics Experience. Current Company Owner as an IT Specialist in FL.
  • http://ww2.justanswer.com/uploads/ZB/zbkai189/2013-8-23_0421_Untitled.64x64.jpg Dan T.'s Avatar

    Dan T.

    Master Technician

    Satisfied Customers:

    8
    USAF trained; currently teaching electronics for the DoD.
  • http://ww2.justanswer.com/uploads/SI/simitpatel/2013-8-22_6857_simit.64x64.jpg simitpatel's Avatar

    simitpatel

    Customer Service

    Satisfied Customers:

    6
    I have 10 years working with electronics.