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HOW TO REPLACE OUTPUT ON MY POWER AMP - Power Acoustik LT-980/2 Car Audio Amplifier

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I have a toshiba tv model #50L1400U. After the tv warms up the picture will flash every 3 to 4 seconds on all inputs. Should I replace the power supply, main board, or both? Thanks


This is mostly power pack problem . check for bulge capacitors in the secondary side of your power , if non check vividly the reservoir capacitor of the primary side very well or even consider it change because it seems the power is not having sufficient capacity to power the load or output ,if ok then.Disconnect the output plugs of the power pack & read the output with your multi meter to check for 24v ,5v & 5.5v . if not ok check for defect component or you change the power pack

Apr 04, 2016 | Toshiba Televison & Video

2 Answers

I shorted out the speaker wire going to sub and now the amp doesnot work


You have probably blown the internal power supply fuses in your amp or the speaker fuse in the amp. The chances of blowing your sub are slim.

The internal fuses can sometimes be hard to find. They aren't usually intended for the user to change. DO NOT replace them with higher amperage fuses if they blow after you replace them as there has been severe damage caused to the circuitry. Also, don't replace them with higher amperage fuses because you think that this will let you get more power out of the amplifier. This won't work, and you will end up blowing your expensive output devices.

Oct 05, 2014 | Audio Players & Recorders

1 Answer

Capacitor 16v 220farads blown.dvd does not can not be on.


replace that capacitor.then disconnect output socket of power module & check all output voltages of power module.if that voltages are abnormal,replace power module.

Jul 01, 2011 | Philips Magnavox DVD/VCR Dual Player

1 Answer

Hooking up the amp i had the ground wire connected and was going to hook up the power wire and it hit the case of the amp know the amp turns on but there is no sound from the speakers other amps work on...


sadly, your amps' output MOSFETS are more than likely toast.

your amp was grounded, and you touched the amp chassis with the power line.
electricity will follow any path available to find ground. in your case, the output mosfets became your main ground-path since they are directly connected to the amps chassis (heat sink) and internally you had grounded the amp so power would flow full force through the output transistors in the serach for a ground.

open up your amp and smell the row of MOSFET transistors. you'll probably even be able to see some burnt transistor legs.

repair or replace.

May 08, 2011 | Kenwood KAC-7202 Car Audio Amplifier

2 Answers

Robinar Cooltech 342000 - on start up stops on the "Initalizing System" screen. Is there a reset procedure available?


You can try the following : 1# Check main 15 amp circuit breaker (located on back of the machine), reset the circuit breaker. If breaker tripped again after reset, the circuit breaker need to be replace.
2# Verify line voltage is present at input of main power switch & output at switch turn ON. If line voltage is not present at power switch input, check connections between power switch and AC plug. If line voltage is present at power switch input, but not at output with power switch turned ON, replace power switch.
3# If all proceeding steps tested OK & problem still exist, you may nee to replace The main control module.
Hope this will help you, if so please vote for it.

Mar 07, 2011 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

Our Robinair a/c recovery machine has power to the switch, but will not power up at all, any ideas?


Please do the following : 1# Check main 15 amp circuit breaker (located on back of the machine) it may tripped, reset the circuit breaker. If breaker tripped again after reset, the circuit breaker need to be replace.
2# Verify line voltage is present at input of main power switch & output at switch turn ON. If line voltage is not present at power switch input, check connections between power switch and AC plug. If line voltage is present at power switch input, but not at output with power switch turned ON, replace power switch.
3# If all proceeding steps tested ok & problem still exist, you may nee to replace The main control module.
Hope this will help you, if so please vote for it.

Jul 27, 2010 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

I just bought a 98 concorde lxi and no sound coming out of the speakers, radio comes on and shows channels just no sounds


Hello georgouseyes,

The problem could be in the output from your receiver to the amp or in the amp itself.

First check to see if the amp powers up. If it doesn't, check the main power fuse (usually located under the hood near the battery). Also check the power and ground connections on both ends.

If the main fuse checks OK, check both onboard fuses. There's 2 35A fuses on the far right.

If the amp powers up OK and the onboard fuses are not defective, it's possibly the output from your receiver or line output converter. Replace the RCA cables with a known good pair. If there's still no sound, I'd suspect that the amp itself is defective.

Hope this helps.

Oct 17, 2009 | Infinity 475A Car Audio Amplifier

2 Answers

I need to replace the power adaptor for a Maxtor One Touch 4 500 GB. I need to know the volt and amp output for it. PN:9NT2A4-500


Power Adapter for Mactor OneTouch 4

AC Input : 100 AC - 240 AC (50/60HZ)
DC Output ( V/A ) : 12V / 3.5A
Output Power : 42W

Apr 17, 2009 | Maxtor OneTouch 4 500GB External USB 2.0...

1 Answer

No Audio when disconnect from external amp and hook to speakers


In a radio like your Pioneer and all similar units there are always a pre-amp circuit that feeds a power amp circuit,In some players there are more than one pre-amp circiuts. It is possible and highly probable that the power amp circuit in your Pioneer is shorted, so you still get some audio output , but very little. I believe this is your problem and I suggest that you bring it to a repair shop for an estimate or replace the unit. Good luck and please rate this answer, Thanks.

Apr 12, 2009 | Pioneer Car Audio & Video

2 Answers

LG 519 Power Supply


try
http://tigerdirect.partsearch.com/Model/LG+Electronics+Incorporated/LG+Electronics%2fZenith/LRM519.aspx
you might get one there

Feb 19, 2009 | LG Electronics LRM-519 Digital Media...

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