I've posted on here before about my subwoofer trouble. It makes a strange noise (almost like a record scatching) on powering up coming out of stanby. At no other point during music or playback is it heard. It is a JBL E250P subwoofer and is not under warranty. I tried a cheater plug and it did not work. I -emailed JBL and this was the response:
"Good morning and thanks for your inquiry. I am sorry to hear of the
trouble with your subwoofer. From what you are describing to me it
sounds like the amplifier is spiking every time it receives an incoming
signal therefore triggering the unit to come out of standby. This noise
could sound almost like a chirping sound....This can be repaired by any
authorized JBL service center and I have attached a link to our locator
to find the closest repair center in your zip code area."
It is not worth it to me to have it serviced because it works perfectly fine. But, it annoys me to the point where I would like to try to fix it myself if it is easy enough. Any suggestions on how to troubleshoot this problem and fix it? Thanks in advance for any responses.