Question about HK (SHENZHEN) INDUSTRIES DEVELOPMENT Huakun 1/8 TV8025 TOYABI RC Monster Truck

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Hi,i have a powered hk elias 112A speaker i have changed two fuses on the board it still powers up but still no sound form the speaker can you help thanks.

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sounds like bad capacitors on the power supply board

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HK AVR 125 display strobing and no sound, even in headphone jack


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Find someone that does TV or audio repair and have them open it up. A cable assembly may have loosened during the MOVE.

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HK 3370 power button turns red when pressed device will not turn on


There may be a short on the output side. Try disconnecting all the speakers on the back of the amp. If the unit stays on after that, turn off the amp and carefully reconnect one speaker at a time. Try turning on the amp after each reconnection. This might isolate any shorts that might exist.

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Hi, I bought a new JBL SCS 140 system with amp HK


Fuses blow when something is shorted. In this case it will be a semi-conductor of some kind. If the device uses IC for the main amplification then you are right to be worried!

The 158 amp is totally unsuitable for the JBL.
This is the specification of the JBL:
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  • they are also 4 Ohm speakers.
  • 158 is: Output Impedance / Channel
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I don't think it has anything to do with the impedance. The amp and speakers are well in the allowed limits. The only time this is a problem is if you connect an amp with a greater impedance then the speakers.
This sounds like something to do with the HK 990. It could have a fault on it. You could try listening with headphones if the HK 990 has a socket for them. If they have low sound, there's an electrical fault in the power amp of the HK 990.

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The volume is to low, i have turn it up to the max, but still it to low, plz help! /Elias


more than likely the power supply accociated with the speakers is either bad, or the speakers are dying.

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yea try use in a monster power strip it clears al of that up it is picking up noise from all the wires

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Humming sound (speakers)when HK AVR is powered up.


In my case the buzz was only on front speakers. There are 3 capasitors (100uF/25V) very close to the cooling ribs of 3 regulators in the power supply. In my case the C922 was bad.

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your fuses are blown by possible crossing speaker wire - and + together. I did this and kept turning it on but I ended up frying the unit. Check your wires and make sure that they are seperated properly. If problem continues then unscrew the shell and replace 1 or all 3 fuses (depending on what was blown) with GMA 8 amp fuses. good luck.

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If you want to fix it:

It must be a contact problem arount the power switch, power cable, fuse or the condensator area.
Maybe you can se a black color on the board.
And checking the solderind points with a magnifyer can help too.

Thats all from that distence.

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