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Class D Switching Power Amplifiers and Power D/A conversion

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Old 11th September 2010, 06:12 PM   #1
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Location: rochester
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I built my 41hz AMP 5 a couple years ago now, just today it seems to have developed a problem with one of the left channel. It appears the solenoid is not connecting the channel, because there is no sound whatsoever. If I flip the on/off speaker switch a bunch of times it occasionally comes back, but then it gives out again soon after. Help!!! I've got a party tonight and I promised people good music, and I don't have a backup amp.
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Old 11th September 2010, 06:50 PM   #2
savu is offline savu  Romania
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open up the amp and look for loose contacts or wires. shake the amp wile functioning to see if it comes alive
1'st rule of chess:
The only way to get smarter is by playing a smarter opponent.
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Old 11th September 2010, 06:59 PM   #3
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Location: rochester
I just moved to a new city, unfortunately left most of my tools at home cause I wasn't expecting to be doing any projects in the short term. Just discovered that if I hold the amp vertically, on its side the channel comes back. Now using the speaker on/off switch works as normal. Must be a little friction or something in the solenoid that gravity helps?? Probably can keep it this way for the party, but not good long term.
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Old 11th September 2010, 07:17 PM   #4
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Flipped Amplifier on side vertically. Was working perfectly for a bit, switching on and off fine. Now 15 min later this isn't even working. RATS!!
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