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The protection LED on the amp is always on.and the green is off

I have an MOQ-vanquish 1200Watt amp...there were two 220uf,16v capacitors blown..I replaced them with 220uf,10v...and the amp started working. But the red LED, next to it written protection is on but the the amp does not work. It never actually worked since it was given to me by a friend..could it be that i used a different cap?please help..couse I wana **** up ma ride yo..

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Make sure you use the exact components inside the amp you can do much more damage to the amp with the wrong stuff inside

Posted on Dec 26, 2008

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On your Deflection board Look for Bad capacitors CP150 2200uf 16v CP114 CP120 in same circuit they will be puffed up on top if they are replace all 3 capacitors.other 2 are 220uf 35v and 330uf 35v

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Thanks for using FixYa. On the Deflection board there are 3 capacitors CP 114, 120 and 150. If any of them is puffed up on top replace all the 3 capacitors CP150 2200UF 16 other 2 are 220UF 35v they will be green with gold writing on them. Resolder all pins on Fly Back Transformer (FBT) also. FBT could be in the power supply. Check the SMPS and in any event replace CP 120: 330UF/35V/HF & CP 150: 2200UF/16V/HF (May be bulged or vented)

Always Resolder Cl031 & Cl032 (usually looks ok on visual inspection but common to ring crack).





Please do accept the solution if the issue is resolved or else revert for further assistance.


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Ck 3 capacitors on deflection board cp150 2200uf 16v use 25v if it is puffed up on top it is Bad other 2 are 220uf 35v cp114 cp120 resolder all pinns on FBT flyback transfomer.

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ON the Deflection board look at cp150 (2200uf 16v)- if it is puffed up on top it is bad replace it and 2 more cp114 & cp120- 220uf 35v. Radio Shack should have capacitors. they are green with gold writing on them.

HAPPY NEW YEAR!

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I would suggest looking at the capacitors on the power supply board. I just got one today with 3 blown caps (the tops are swollen) and a couple missing components.
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Look for bad capacitor cp150 will be Green with Gold writing 2200uf 16v also if this is bad replace the two other caps near it they will be 220uf 35v.

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Look on Deflection board cp 150 2200uf 16v capacitor and there is 2 more capacitors 220uf 35v replace both of them. Green and Gold writing on caps.

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1 Answer

Veiwsonic 924x


This is a generic symptom that could happen to any LCD monitor.
The following is a generic answer applicable to most.

The most possible causes are bad capacitors or a bad semi-conductor.

Open the unit and check to see if any of the capacitors in the power supply or other boards look domed or vented on the top.

Replace any capacitors accordingly. Use the same value capacitors. Most often, 1000uF 16V or 25V, 470uF at 16 or 25V, 220uF at 16V or 25V.

If this doesn’t solve the problem, try checking the surface-mount transistors on the inverter board that run the lights. Some times these transistors go bad and can cause the power to cycle up and down. Check the area for any cracked or overheated ceramic or mylar capacitors.

Don’t forget to check for caps on the main board. Some times these boards are overly simple and only have a couple of caps, but other times they are teaming with them.

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