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Old 6th May 2004, 10:55 AM   #1
Ford_V6 is offline Ford_V6  Romania
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Default Problems with STK chips


I have built a STK4231 amp using the schematic in the datasheet with all the protection and mutting circuits. Now the amp worked fine until i have shorted some pins on the PCB with a screwdriver, but the amp was shut down at that time. From that moment the amp did not powerd on again. I changed the STK chip with a 4241 and all the transistors and . . . . the same. I have changed the diodes and . . . nothing. No noise, no nothing. Only when i touch the pins 1 and 22 with my finger i can hear a brooom. This happens with both the stk chips the 4231 and 4241.

Any ideas ????
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Old 6th May 2004, 12:07 PM   #2
arasuk is online now arasuk  India
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check out for the fake stk ICs , I have been informed that these stk are available in fake form.
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Old 7th May 2004, 05:57 AM   #3
Ford_V6 is offline Ford_V6  Romania
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i know they may be fake chips but why they worked fine ???
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