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Post by dobrykamil on Aug 4, 2017 11:18:58 GMT -5
Looks like this design by Klipsch (Promedia 2.1 new version), uses an almost identical smps design, even uses what looks like the same smps module! Do you have the SM for this Klipsh sub? |
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Post by leeboy22001 on Aug 4, 2017 12:57:16 GMT -5
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Post by dobrykamil on Aug 4, 2017 13:03:46 GMT -5
Thanks man! Amplifier board looks very similar.Will double check it later. I might be able to fix mine now.
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Post by leeboy22001 on Aug 4, 2017 13:08:08 GMT -5
No worries  |
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Post by leeboy22001 on Aug 4, 2017 13:13:57 GMT -5
The amp does indeed look the same !
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Post by dobrykamil on Aug 4, 2017 13:34:33 GMT -5
Great found mate! I've been looking this for ages now. I'm glad, I didn't throw away this amp.
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Post by leeboy22001 on Aug 4, 2017 15:06:29 GMT -5
Glad to be of help , What's wrong with the amp ? |
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Post by dobrykamil on Aug 4, 2017 15:13:39 GMT -5
It blows the main fuse taking down pair of mosfets, Q11 and Q10.
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Post by leeboy22001 on Aug 4, 2017 15:27:26 GMT -5
You tend to find the blown fets will take out the driver stage, if the fets could be both on the same time, blowing the fets, and the fuse !
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Post by leeboy22001 on Aug 4, 2017 15:31:44 GMT -5
Test both q3 and q4 for shorts when q10 and q11 are removed
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Post by dobrykamil on Aug 4, 2017 15:39:14 GMT -5
Aye that's the plan.I might get a chance to test them tonight, working on the Pioneer vsx-921 at the moment.Has a fricking intermittent issue, when once a week or two it will shut itself off with the hdmi light flashing.DC protection circuit kicks in. Amp section is fine,done some other test and now I'm on 99% sure that on of the +/- 12V or +/- 5V regulators is faulty.
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Post by leeboy22001 on Aug 4, 2017 15:44:57 GMT -5
Cool, had an almost identical issue with Pioneer 920k !, wouldn't turn on intermittently and PQSL light cane on, now happens all the time!
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Post by dobrykamil on Aug 4, 2017 16:31:28 GMT -5
During Standby mode, simultaneously press and hold the “TUNE ↓” and “MULTI-ZONE ON/OFF” keys for 5 seconds. Then use [↓] : TUNE key and [↑] : TUNE key to see the history of detected faults.
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Post by leeboy22001 on Aug 4, 2017 16:54:29 GMT -5
Ok, will try
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