ProSoundWeb Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: [1]   Go Down

Author Topic: Yorkville LS801P Issue (suggestions?)  (Read 3123 times)

Vinny DAgostino

  • Full Member
  • ***
  • Offline Offline
  • Posts: 136
  • Warwick, RI
Yorkville LS801P Issue (suggestions?)
« on: July 26, 2012, 09:04:49 am »

Story:

A few months back one of my LS801P subs started developing a output issue.
It periodically would just stop producing sound for a few seconds up to a minute at random times at various volume levels.
The power module always showed power when not producing sound and always fed a signal through to the other PA cabinets.
It would do this if I was playing soft quiet break music and also when a band was playing all out. It would do it within the first few seconds of it being turned on and also later on in the performance.....it would happen at various times throughout a night or sometimes would not happen at all.

Me being not the technical genius could only open up the amp module and look for something to jump out at me and say *here is the problem*...well, that didn't happen.
Nothing stands out as far as my eye can see....and like I said, the unit does work and you just don't know when it is not!

I had tried to replicate the issue in my basement by letting music play through it....went 12+ hours and the issue never happened.
I tried kicking, dropping, rocking the cabinet back and forth violently....nothing.
I checked all leads going to the speaker internally and everything looked fine, no loose wires and solder connections on the driver looked good.

The unit is out of warranty (by 3-months) and the price to ship the entire cab back to Yorkville would be close to $400 round trip (just not worth it IMO).
My dealer talked with the local sales rep and we decided to send just the amp module in to be checked....as I would have guessed, they can't find anything wrong with it. (because it works)
The service tech had me call them direct to explain to him exactly what the unit was doing and he is firm in his evaluation of the amp module that it is not the problem.
He of course asked for me to send the entire cabinet back....thats just not happening.

Now some have suggested to me that it is possibly the driver itself....but, I have had the driver working on its own in my basement for over a month now and it has worked everytime without issue.

The only thing I am not sure of is it could possibly of been a poor connection on one of the multipin connectors attached to the amp module (speaker lead). But I have know way of really knowing that.

Any other thoughts? Ideas? or do I now just have a 150lb paper weight?

The Yorkville tech said that he was going to look at a few more things on the amp module, so I don't know when I will get it back.
They have had it now for 3+ weeks already.

Thanks,
Vinny
Logged

Vinny DAgostino

  • Full Member
  • ***
  • Offline Offline
  • Posts: 136
  • Warwick, RI
Re: Yorkville LS801P Issue (suggestions?)
« Reply #1 on: July 29, 2012, 09:56:56 am »

 :(
Logged

Chris Chambers

  • Full Member
  • ***
  • Offline Offline
  • Posts: 155
  • Melbourne, Australia
    • MAD Productions
Re: Yorkville LS801P Issue (suggestions?)
« Reply #2 on: July 29, 2012, 10:02:24 am »

Voltage swing or current draw issues within the venue? You mentioned you couldn't replicate the issue

John Penkala

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 510
Re: Yorkville LS801P Issue (suggestions?)
« Reply #3 on: July 29, 2012, 01:07:02 pm »

:(

Vinny,
       Intermittent problems are very hard to find. The basic attitude of a bench tech is "if it isn't broken, don't fix it". They will say it worked fine and send it back to you. Occasionally, you might get a tech that might simply make an educated guess based on the failure history of the specific model. For instance, if 92% of failures of model XYZ are due to an $11 chip, the tech will just put in the $11 chip without seeing the symptom first hand. For a few bucks and the bench fee you are paying anyway, it is worth the gamble. If you have a really good tech, they might even be motivated to do a hot/cold test with a heat gun and cold spray on key components likely to fail under thermal conditions. If none of these scenarios happen, you will likely get your amp module back unrepaired.
       The good news, if you want to call it that, is that many times intermittent problems grow into catastrophic failures that then can be fixed!!!
       FWIW, I don't think that the problem is with the driver. If you suspect that it is, just swap the amp modules of your speakers. If the problem moves with the amp module, there is a problem with the amp module. If the problem stays with the speaker cabinet, it is driver/wiring related. If you have a bunch of LS801p's it might be worth stocking a spare amp module. Otherwise, just wait and see what happens when you get it back. Good luck!

JP
Logged

Vinny DAgostino

  • Full Member
  • ***
  • Offline Offline
  • Posts: 136
  • Warwick, RI
Re: Yorkville LS801P Issue (suggestions?)
« Reply #4 on: July 30, 2012, 12:48:50 pm »

. If you have a bunch of LS801p's it might be worth stocking a spare amp module. Otherwise, just wait and see what happens when you get it back. Good luck!

JP

Yorkville will not sell just the amp module, already checked...It was what I wanted originally because I know they are going to comeback and say nothing is wrong with it.

And they may be right, I just hate having to take a piece of gear back out and wait for it to fail..
Logged

ProSoundWeb Community

Re: Yorkville LS801P Issue (suggestions?)
« Reply #4 on: July 30, 2012, 12:48:50 pm »


Pages: [1]   Go Up
 



Page created in 0.045 seconds with 24 queries.