Jump to content

Promedia Ultra 5.1 died. PLEASE HELP!!!


nathanr

Recommended Posts

To my dismay, found out that the sound system wouldn't turn on this morning. Nothing happens when I press the power button on the control pod. I've tried different power cords in different power outlets to no avail. Is there a way to salvage the system?

Link to comment
Share on other sites

The best scenario would be that a power spike has triggered the panel's safety device (a metal oxide varistor, or MOV) to absorb the spike, shorting out and blowing the fuse. It is a yellow or blue disk next to the fuse, and would likely be charred. If a fuse blows as soon as the panel is plugged in, then that is likely the problem. Or you can use an ohmmeter to check if there is a short across the terminals of the MOV. The MOV is available at Radio Shack, as is the five amp slow blow fuse. If the panel does not blow the fuse as soon as it is plugged in (or smarter, if you have been able to rule out a shorted MOV by measuring a high resistance across its terminals), then do not try to turn on the panel. You will only blow the replacement fuse, and possibly cause further sputtering of hot metal from the power supply (shorted MOSFET or blown bridge rectifier are almost certainly the problem). I'll contact you privately about further repair options. Your panel is very likely worth repairing.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...