Hi, im mar can you help me with my aiwa component... it has no sound at all and no sound level in the display and the fan doesn't work too... pls. help me what to do, and what parts or components i have to checked and replaced... in the amplifier section it has two large IC, STK 490-040S and 490-310... hope to hear from your brilliant idea and opinion experts of electronics troubleshooting... mar
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