Question about Audio Players & Recorders
Use about 3 times a year this year connected up works for about 15 mts then cuts out crackling and buzzing,switch off leave for short time ,on again same prob after again any suggestions. Cobra 1100 pa top
Posted by Anonymous on
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Posted on Jan 02, 2017
If your volume is down and there's a hum, then it could be that your capacitors in the power supply are blown. Also there could be a problem with the bridge rectifier, possible that there's 1 or more diode's defect. Any technician can reapir that.
Hope it helps,
Posted on Jan 31, 2009
You have to check the ohms of the speakers all spekers should be 8 Ohms or above. if not it will overload the amplifier at high level. The minium ohms impedence of the amplifier is 4 ohms. If you connect two 8 ohms speakers together then the effective ohms will be 4 OHMS then the amp will handle the speakers. If you connect two 4 ohms spekers together then the effective ohms will be 2 Ohms, this will overload the amplifier. You will be able to connect two 8 ohms speaker to left channel or right channel of the amplifier. Check the speaker spesifiction to know its ohms. Make sure all the speakers have an impedence of 8 OHMS or above
Posted on Aug 19, 2011
I Think that something like a transistor is getting hot and then shutting down. Exploring inside might solve the problem of what's getting really hot. You could even get some Servisol Freeze Spray, and wait for it to go off then spray it on the suspected part. That will cool it down and it should start up again. If it does come on, that part will have to be replaced.
Posted on Jun 28, 2012
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