|
qtx powered speaker repair |
Post Reply 
|
Page <123> |
| Author | |
Tan-2 
Registered User 
Joined: 29 April 2011 Location: Glasgow Status: Offline Points: 255 |
 Post Options
 Thanks(0)
 Quote Reply
 Posted: 12 May 2013 at 9:27pm |
|
any luck with mod boosting the module?
|
|
|
Logic will get you from A to B. Imagination will take you everywhere.
|
|
 |
|
|
EddW
New Member 
Joined: 06 June 2014 Status: Offline Points: 1 |
Post Options
Thanks(0)
Quote Reply
Posted: 06 June 2014 at 10:40pm |
|
Hi All
I have one of these QTX powered speakers, I am not an electronics expert but have some basic knowledge. The symptoms for the problem I'm having is; no power to the MP3 player board and the radio mic's don't work but have power to the board. I have metered the power out on the board with the line in's that's goes to the mp3 board. These is 0v on this output. I also think the charging circuit is not working as the battery is giving out 7v and when mains is applied it changes for a couple of seconds then stops. Any ideas welcome Thanks Edd |
|
|
|
|
kedwardsleisure
Old Croc 
Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
Post Options
Thanks(0)
Quote Reply
Posted: 07 June 2014 at 12:07am |
No. Eons very easy to recone, dont even have to take the speaker apart. The jbl kit comes with cone, ready fitted coil & suspension, dust cap, shim and glue. |
|
|
Kevin
North Staffordshire |
|
|
|
|
mitchiemasha
Registered User
Joined: 27 August 2009 Status: Offline Points: 466 |
Post Options
Thanks(0)
Quote Reply
Posted: 16 July 2014 at 2:05am |
|
Any chance of getting some activity back on this thread. I have a QTX powered 15 here for repair. 1 of them has an intermittent fault. It starts to crackle, even with no audio input.
|
|
|
|
|
Tan-2
Registered User
Joined: 29 April 2011 Location: Glasgow Status: Offline Points: 255 |
Post Options
Thanks(1)
Quote Reply
Posted: 16 July 2014 at 7:43am |
|
Start by checking all contral pots via giving them a clean and if fault is still there remove the amp board and check for dry solder joints.. You can spit preamp stage and check that, also remove preamp connection lead to the power amp and power up to see if there's any odd sounds from the amp stage.
See how you get on there. |
|
|
Logic will get you from A to B. Imagination will take you everywhere.
|
|
|
|
|
slaz
Old Croc
Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
Post Options
Thanks(0)
Quote Reply
Posted: 16 July 2014 at 9:22am |
Almost certainly the battery is permanently dead. Its an SLA isn't it ? If that battery has been fully discharged, then left for some time without a charge - well that will happen. More than likely replacing the battery will fix that. |
|
|
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
|
|
|
|
|
Tan-2
Registered User
Joined: 29 April 2011 Location: Glasgow Status: Offline Points: 255 |
Post Options
Thanks(0)
Quote Reply
Posted: 16 July 2014 at 3:27pm |
|
I've made comments at the start of this topic to point in the direction..
These type of powered speakers do come in different size cabs.. Such as pa units with bass and top horn style with straight forward pre-amp and power amp stages.. |
|
|
Logic will get you from A to B. Imagination will take you everywhere.
|
|
|
|
|
mitchiemasha
Registered User
Joined: 27 August 2009 Status: Offline Points: 466 |
Post Options
Thanks(0)
Quote Reply
Posted: 18 July 2014 at 8:06pm |
|
Thank you I will try that.
|
|
|
|
|
NeedMusic
New Member
Joined: 23 July 2014 Status: Offline Points: 1 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 July 2014 at 12:48pm |
|
I too have a QTX powered 15. The top "tweeter" blew, making the sound all muffled. We've replaced the tweeter and after initially working it is now broken. Even with no audio inputs (just powered on) it squeaks/hisses randomly. the level of which changes as you turn the input faders on the back.
Does anybody know what causes this? Any quick fix? Thanks.
|
|
|
|
|
Tan-2
Registered User
Joined: 29 April 2011 Location: Glasgow Status: Offline Points: 255 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 July 2014 at 2:07pm |
|
There's no quick fix on powered speakers..
Only if you know how to work on the electronics in side .. Reach for the meter and start checking its power supply's pre-amp will be around 12 +/- to 15 +\- volts then the power amp part say 50+/- or more volts.. |
|
|
Logic will get you from A to B. Imagination will take you everywhere.
|
|
|
|
|
Earplug
Old Croc
Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 July 2014 at 10:31am |
|
Did it have a proper tweeter, or piezo? If you replaced a piezo with a 'proper' tweeter it will blow pretty quickly - and maybe take out the amp as well. And if you´re not sure which way up a multimeter goes, you´re better off taking it to a proper repair person.
 |
|
|
Earplugs Are For Wimps!
|
|
|
|
|
kedwardsleisure
Old Croc
Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 July 2014 at 7:16pm |
|
quality
|
|
|
Kevin
North Staffordshire |
|
|
|
|
Post Reply
|
Page <123> |
| Tweet |
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options
if the main bass driver blow the whole front casing had to be fitted