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#1
Posted to rec.audio.tech
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How To Clean Speaker Protection Relays
I have an Onkyo 696 Dolby Digital Receiver (about 5 years old) that
has intermittent volume problems with the left rear surround speaker and occasionally the right front. I can get the sound back if, when I'm doing the tone test and there is no sound coming out of the speaker, I jack up the volume on the speaker the sound will generally come back. I've opened the receiver up since it's out of warranty, and have located thespeaker protection relays but am not sure how to remove the rectangular plastic cap to access for cleaning. I bought DeOxit for the job and would like to get on with it, but would love some advice on how to take care of this problem- how to remove the plastic caps and how to do the cleaning. I've done a little research and I believe that is where the problem is, but I could be wrong. Thanks for any help. |
#3
Posted to rec.audio.tech
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How To Clean Speaker Protection Relays
In article ,
Don Pearce wrote: On Sun, 23 Sep 2007 17:22:32 GMT, wrote: First be sure that you have actually located the problem. Temporarily put a short across the contacts to the relay - I presume they emerge onto a PC board; just solder a short length of wire across. If the problem ceases, then the relay is at fault, if not, you need to look elsewhere. d Pearce Consulting http://www.pearce.uk.com In the past I've used a diamond-covered file to polish the contacts; this was before DeOXit. This was never a permanent solution and I eventually wound up looking for replacements. The plastic cover can usually be removed by removing a metal clip, or by using a small screwdriver to pry off the cover. How long ago - I learned this trick keeping the 6V lights on my '56 Norton motorcycle going. I got the file at a large electronics supply store. Mike Squires |
#4
Posted to rec.audio.tech
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How To Clean Speaker Protection Relays
wrote in message ... I have an Onkyo 696 Dolby Digital Receiver (about 5 years old) that has intermittent volume problems with the left rear surround speaker and occasionally the right front. I can get the sound back if, when I'm doing the tone test and there is no sound coming out of the speaker, I jack up the volume on the speaker the sound will generally come back. I've opened the receiver up since it's out of warranty, and have located thespeaker protection relays but am not sure how to remove the rectangular plastic cap to access for cleaning. I bought DeOxit for the job and would like to get on with it, but would love some advice on how to take care of this problem- how to remove the plastic caps and how to do the cleaning. I've done a little research and I believe that is where the problem is, but I could be wrong. Thanks for any help. Replacements from Onkyo are reasonably priced. The best solution is to replace the relay(s). Mark Z. |
#5
Posted to rec.audio.tech
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How To Clean Speaker Protection Relays
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#6
Posted to rec.audio.tech
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How To Clean Speaker Protection Relays
On Mon, 24 Sep 2007 12:29:30 GMT, (G) wrote:
In article , wrote: I have an Onkyo 696 Dolby Digital Receiver (about 5 years old) that has intermittent volume problems with the left rear surround speaker and occasionally the right front. I can get the sound back if, when I'm doing the tone test and there is no sound coming out of the speaker, I jack up the volume on the speaker the sound will generally come back. I've opened the receiver up since it's out of warranty, and have located thespeaker protection relays but am not sure how to remove the rectangular plastic cap to access for cleaning. I bought DeOxit for the job and would like to get on with it, but would love some advice on how to take care of this problem- how to remove the plastic caps and how to do the cleaning. I've done a little research and I believe that is where the problem is, but I could be wrong. Thanks for any help. I most usually get some small screwdrivers and try to lift, at the same time tring to pull the sides out. Sometimes the agression messes things up a bit. Sometimes I cut the top off with a tool or drill into it. A few swipes with 600 or greater sandpaper works nice, and a little lube to keep them going. Sometimes I have switch the relays from main to second channel. greg I was thinking about cutting the plastic covers off. What good are they if the relays still become problematic even with the covers on? |
#7
Posted to rec.audio.tech
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How To Clean Speaker Protection Relays
In article , wrote:
On Mon, 24 Sep 2007 12:29:30 GMT, (G) wrote: In article , wrote: I have an Onkyo 696 Dolby Digital Receiver (about 5 years old) that has intermittent volume problems with the left rear surround speaker and occasionally the right front. I can get the sound back if, when I'm doing the tone test and there is no sound coming out of the speaker, I jack up the volume on the speaker the sound will generally come back. I've opened the receiver up since it's out of warranty, and have located thespeaker protection relays but am not sure how to remove the rectangular plastic cap to access for cleaning. I bought DeOxit for the job and would like to get on with it, but would love some advice on how to take care of this problem- how to remove the plastic caps and how to do the cleaning. I've done a little research and I believe that is where the problem is, but I could be wrong. Thanks for any help. I most usually get some small screwdrivers and try to lift, at the same time tring to pull the sides out. Sometimes the agression messes things up a bit. Sometimes I cut the top off with a tool or drill into it. A few swipes with 600 or greater sandpaper works nice, and a little lube to keep them going. Sometimes I have switch the relays from main to second channel. greg I was thinking about cutting the plastic covers off. What good are they if the relays still become problematic even with the covers on? If they are clear its very easy to drill a small hole so the red nozzle fits in or just spray into the hole with something like Cramolin or Deoxit, or Blue-Stuff. greg |
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