Question about Audio Players & Recorders

1 Answer

Upon power up, LED barely lit up (flckrd) but did not stay lit.

After removal of the lid it was discovered a screw had come lose from the board. Located the hole and installed the screw back, but the fuse was not blown powered up with the same result...a flickering main LED. This unit is used in a mobile sound system to drive twin horns and twin Dual Super Tweeters. (stereo) Fuse Good.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 4,234 Answers

Can you please post the make and model of the unit along with any other symptoms you see?


Posted on Jan 16, 2009

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

He never active and ACL Led stays on and the cooling fan go for hi speed

Hello folks,
The same thing happening with my crest cc4000. The plastic connector, connecting the wires from the transformer to the circuit board was burnt damaged and was removed. but acl light still stays on and amp not active.

Dec 19, 2012 | Crest Audio CC4000 Amplifier

1 Answer

When first turned on the left clip led is illuminated-no sound

Try spraying it with contect electric cleaner it worked for my amps

May 19, 2012 | QSC GX5 2Channel Amplifier

1 Answer

I have a YORKVILLE AUDIOPRO 1212 mixing board. When I turn it on the PROTECT power LED light comes on and stays on (does not go off.) What can the problem be?

That's your Amp Protect. Only a Yorkville certified technician can help you now. Email Tom Keefer at for a return authorization number, then mail it to Yorkville. They'll fix the problem.

Nov 17, 2011 | Audio Players & Recorders

1 Answer

Technics SU-Z25 ''no front led's lit'' and no power to the power on led. All other functions are perfect. Please can anyone advise.

Hi and welcome to FixYa,

Check diode D407, resistor R405 and capacitor C403 in the power supply section.

Good luck and thank you for asking FixYa.

Apr 11, 2010 | Technics Audio Players & Recorders

1 Answer

Upon " power on" "fault" lights blink then power unit off.

If you're happy to have a look inside the amplifier you can disconnect it from the mains (important bit), then take the lid off and have a look. It doesn't hurt to look for components that are obviously at fault, (burnt, bits missing, no longer connected to the board etc). Be advised there will be some charge in the capacitors still so don't go poking around too much.
If you find something clearly not right, if you have the tools and skills then you could replace the component, or send it for repair. Be advised though that sometimes a fault elsewhere may cause a component to fail.

Dec 17, 2009 | Crown CE1000 2-Channel Amplifier

2 Answers

Hi, I have a NAD 3020 and usable volume has gone. You can still hear it really quietly even with the volume up full. Do you think this is a power transistor or a transformer problem. Cheers. Doug

It's a muting problem, not a power amp problem. The muting circuit on this amp has a very high impedance node, which makes it very sensitive. Right next to the area of the board that contains the muting circuit is a large-ish capacitor that is held in place by a blob of glue. The glue has usually spread out enough to reach some of the muting components. The glue decays over time and becomes slightly conductive. This is enough to keep the amplifier in the muted state, permanently, instead of releasing it about two seconds after power-on.
The picture shows the amplifier with the top removed. The box is where the old glue used to be. The glue is to hold the purple tubular capacitor steady. It is not really necessary unless you have the amp sat on top of your speakers (not recommended).
To remove the glue, unplug the amp from the mains, remove the lid (six screws), locate the area in the picture and scratch the glue away with a large needle or tiny screwdriver. The most important bit is to remove the glue from the bare wires at the ends of the resistors (the brown stripy things).
If this doesn't solve the problem, or it returns, the capacitor that determines the length of the muting period may have failed. This is a slightly less diy repair as you will need a soldering iron and a new capacitor.


Nov 08, 2009 | Audio Players & Recorders

1 Answer

Nad c350 no power at all

check your output stage for bad speakers cable or bare wire of cable touch the body of amp----short circuit speaker cable----bad speaker it self------ bad input cable or defective input device .
disconnect all and check if it is ok---start to connect one by one from input to outputs------if all above failed you must contact service center for help.

Aug 22, 2008 | NAD C320 2-Channel Amplifier

1 Answer


sounds like DC on that output.
needs service possibly fried all the output transistors on that channel

Jul 30, 2008 | Xantech PA1235X Amplifier

2 Answers

NAD 304 power indicator

Change resistors 333 & 334 - 47k-1W

Jan 05, 2008 | Audio Players & Recorders

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

66 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts


Level 3 Expert

98914 Answers


Level 3 Expert

4678 Answers

The Knight
The Knight

Level 3 Expert

69938 Answers

Are you an Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides