Question about Boss IQ 1080.2 Car Audio Amplifier

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On power up.......protect light comes on

Boss gt 1080 ....anybody have a schematic???? we need to identify 2 burned resistors on power input side of board and being an amatuer......a schematic would be invaluble to me while trouble shooting output side of amp. Thanks

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Re: on power up.......protect light comes on

What are the resistors connected to? mosfets?if so you need to identify which pin gate or source,these amps have dual so the other side would be the same.

Posted on Aug 09, 2007

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Low level input resistor values ti600.2 left and right channel resistors on board next to RCA in both burned

Hi Dave,

Schematics are tough to come by - but - you may find someone with your model that can help you out in the "Phoenix Gold Phorum" Joining is free - then ask your question and wait for a reply.

Good luck!

Dec 17, 2013 | Phoenix Gold Car Amplifiers

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Motor Joy

Hey boss. Just follow this guide and replace with a resistor that matches the value and tolerance. You have a 5 Band resistor, follow the guild and you should be good. Click here for a chart to help you identify the values.

Jul 06, 2013 | Car Amplifiers

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hi i have one too with the same problem two transistors on the POWER side of the amp has exploded. to br sure of a durable fix u need to change all (6) on the same row... caus when they burned all the load as transfer to the remaining 4. not for long u will tell me, but thrust me its long enough to weaken them i have no diagram but the number on them u can easily found replacement one

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Model c-700 It turns on but the protect light dosent come on. What's wrong with it

protect light only comes on when theres a short or bad earth as long as power light on your all good you never wanna see protect light on cheers mate]

Oct 17, 2009 | Boss REV-700 Car Audio Amplifier

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I have a Boss OL5KD Class D Monoblock Amplifier and I set it up but is no sound coming up from the speakers, can anyone tell me how to higher the volumen? where is located the volumen??I need to higher the...

Hello maydude01,

The Boss OL5KD does not have a volume control. It has an "Input Level" adjustment which is used to match the output from your head unit preamp output to the amp. It is the first rotary control just to the right of the input jacks.

If you have no sound at all, I'd suspect that something is incorrectly connected or there is no input to the amp. First make sure that the amp power light (green LED) is coming on when you turn on the receiver and that the protection light (red LED) stays off. Then check all of your wiring, especially the RCA output cables.

Initially set the controls like this: MASTER/SLAVE switch in MASTER position (left). INPUT SENSITIVITY 2v-8v (right). INPUT LEVEL, SUBSONIC FILTER, BASS BOOST, and LOW PASS FILTER; midrange. PHASE SHIFT "0" (left). Leave the remote level control disconnected.

After you've checked all wiring and initially set the switches and controls, turn the receiver on to about 3/4 volume. Now adjust the INPUT LEVEL to the left just until you begin to hear distortion, then turn it back right just a little. Adjust the other controls for best sound. Plug in the remote level control and make sure that it adjusts the bass up and down. You're finished!

If there's still no output from the unit after checking all of the wiring, either the unit is defective, it's not getting an input from the receiver, or the sub(s) are defective.

Hope this helps.

Aug 14, 2009 | Boss Car Amplifiers

2 Answers

I need repair help. no schematics

Blown Mosfets
A thumbs up would be greatly appreciated if this answer is helpful to you. need-repair-help-no-schematics-zb4bomd1rt4qms0dqd12kkt2-5-0.jpg

Nov 08, 2008 | Lanzar VIBE266 Car Audio Amplifier

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Phoenix Gold Octane-R 15.0:1

PG won't release schematic diagrams. Are the burned components resistors? If so, what are their circuit board designations (Rxyz)?

Aug 14, 2008 | Phoenix Gold Octane-R 15.0:1 Car Audio...

1 Answer

Wiring up amp/installing amp

Disconnect all the wires and make sure that their all connected to the right terminals. If not positively sure trace all wires back to source. If you ground and power is swapped it will automatically go over to protection mode.

Apr 04, 2008 | Car Amplifiers

1 Answer

Parallel connection of power mosfets with two of 5 smoking

The IRFZ46N are n channel high speed switches . They basicly drive the Mosfets. Sounds like you have some problem there my friend, and unless you paid alot for this amp. Its going to need probobly all the n channel switches as well as every mosfet + the bias resistors repalced. Before plugging in the amp jump out the fuse with a 100 watt light bulb.. If the bulb glows brightly when you apply power there is still a short in the unit and could be in the switching power supply section of the amp. If it glows bright and dims, The shorts are most likly gone. The bulb will minimize the amount of current the unit can draw and most of the time wont let the new parts blow out. Check out this service number and see if they can help you. Good Luck Main support number 978-823-0300

Jul 26, 2006 | Pyramid PB779X Car Audio Amplifier

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