After 9 days new my Primare I21 amplifier blew a channel (no sound from one speaker). The repairer said there was a blown fuse caused by shorting of the speaker wires. I find this hard to believe as i took great care to ensure this did not happen. The system was also switched off when I plugged in all my cables.
can this problem be caused by anything else? Could it be due something happening during the manufacturing process, faulty component/s? Could it have been cause by amp being dropped during transit (the retailer did mention that the box could have been dropped by the freight company.
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Re: Blown fuse no sound in one channel
The only way this could happen is either the wires touching or a capacitor overheating and shorting out, Also hardly bumped or dropped would cause loose solder connections. Wich you should check eitherway
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Disconnect the dead channels speaker connection at the Amplifier, if the short goes away then you have a shorted speaker voice coil or wiring to speaker, if still blows the fuses you have an output Transistor circuit that is shorted, and the Amplifier will need to go to a qualified home electronics repair shop for testing and repair, be advised the average cost can exceed $100+
Hi, even though the mains fuse on back of amplifier is fine, the speaker fuses might have blown. Now really you need to take it to get repaired but if you know someone who has electronics knowledge they could look inside the amplifier to check the speaker output fuses. I wouldn't want to advise you to do it as there are dangerouse voltages inside the amplifier. If you need more help, I will guide you.
If you can't hear any sound from the headphone output, and by sound I mean a hum with the volume turned up, then the amp has either got a faulty internal power supply or the main amp has failed. Try looking inside to see if any fuse has blown. Also look around to see if you can see or smell anything has blown.
Hi, Very unlikely your repair of the RCA caused any damaged as preamp shouldn't cause big issues in the amp and would say you right that the problem existed already. The resistor is 100 ohm 5% but there is almost definitely blown outputs to have caused it. Most electronic places should be fine to test advise and repair. Would suggest outputs and drivers, but unfortunately not always that simple. Best of luck
Adcom makes a great amplifer! Usually broken highs and no bass means blown speaker. Try hooking it up to a completely different input source. Try different speakers also. If problem persists, check the fuse. Most will have a fuse on the back you can screw out. Some have two fuses (one for each channel) If this doesn't fix the problem it could be expensive to fix. Also, does this model ave the thermal protection light and if so, does it come on at all?
Sounds like the out put stage of the amp is shorting, They are either 4 large transistors attached to an aluminium plate (heatsink) or one large chip with heatsink. also sounds as the driver stage went too when you switched it on the second time. If you know nothing of electronics I suggest you take it to an audio repair shop, as it is cheaper to repair than replace high power amplifiers.
first check your speaker cabels for short circuit and speaker for short coil .after you confirm there is no shotr of cabel wires by checking with avometer in ohm postion.connect speaker if the problem excit your speaker is guilty - change it with same configuration.about switches put it in low order and chech for sound level and you can go up after that.