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The Philippine Electronics and Technology Forum > General Electronics and Technology Discussion > General Electronics and Technology Discussion (Moderator: DyoodekS) > 110v plugged into 220v
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Author Topic: 110v plugged into 220v  (Read 764 times)
wax_static
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« on: November 10, 2008, 02:10:42 PM »
our bassis acciedentaly plugged in our bass into a 220v outlet instead of using a step down x'former. i've already changed the coil inside. but still all i'm getting is a hum from the speaker... I also checked the IC and I think its also busted... it seemed it leaked already... what do you think guys?
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« on: November 10, 2008, 02:10:42 PM »
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tdh7700
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« Reply #1 on: November 10, 2008, 02:15:53 PM »
Ang tanong may audio b n lumalabas? O puro hum lang. Anu po ung ic nya?
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ORDONIO ELECTRONICS
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wax_static
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« Reply #2 on: November 10, 2008, 02:50:59 PM »
continuous hum lang sir.. i think LM1875... medyo erased na yung label..
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gie62
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« Reply #3 on: November 10, 2008, 02:56:19 PM »
palitan mo na lang yan sir, isama mo na yung filter cap ng + and - supply. wala pang 100.00 yang ic.
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wax_static
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« Reply #4 on: November 10, 2008, 03:43:01 PM »
cge sir.. try ko yun...
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tdh7700
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« Reply #5 on: November 10, 2008, 05:21:10 PM »
Quote from: wax_static on November 10, 2008, 02:50:59 PM
continuous hum lang sir.. i think LM1875... medyo erased na yung label..


 try to measure yung output kng ma boltahe close to supply voltage sira na ic .palit ka nlang ng ic..
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ORDONIO ELECTRONICS
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wax_static
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« Reply #6 on: November 18, 2008, 11:29:06 AM »
i replaced the LM1875 and filter caps... ok na ulit yung amp.. thanks guys!
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