Question about Audio Players & Recorders

Open Question

I HAVE A PR200.2 MEMPHIS AMP THAT THE POWER LIGHT JUST FLASHES AND THE PROTECT LIGHT IS SOLID. WHY?

Posted by on

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

VSX 60. MCACC blue Light flashes and unit will not turn on


try pressing and holding 'advanced surround' and the power button. This should reset the protect circuit. If it turns off again right away, then there is a problem with the amp that needs to be repaired.

Mar 25, 2014 | Pioneer VSX-52TX Receiver

1 Answer

No power output or display.green standby light flashes.


Sounds like either a blown mainpower fuse or the thermal fuse for the power transformer. If the protect circuit was kicking in, the display would light up, but then turn off with a red blinking light. the green light with no display means the transformer is not getting power.

Dec 31, 2013 | Denon Avr-1610: 5.1 Ch A/V Home Theater...

1 Answer

PROTECT MODE


usually means a short in the amp section. Needs to be repaired before it will turn on properly

Nov 17, 2013 | Sony STR-DG500 Receiver

1 Answer

I have an avr-2106 and it turns on and then goes into protect mode. The green light flashes n then shuts off. What can i do


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Jul 25, 2011 | Denon Audio Players & Recorders

1 Answer

My integra dtm 5.3 flashes protect when i turn it on and then shutdown and the standby light start flashing. cant seem to find an answer.


disconnect all speakers. do this with the power cord unplugged from wall. then re-try without speakers. if still in protect --shorted channel-which is repair/parts will be needed.

Feb 27, 2010 | Audio Players & Recorders

1 Answer

Unit only stays on for 4 seconds then turns itself off.


This is a short or unstable ohm load. Remove all speaker wire connections to see if the amp will stay on.
If the problem goes away when disconnecting the speaker wires try this:
1) Check volume level on zone one and zone 2 if connected. If it is too high the amp will go into protect mode and shut off exactly as you described.
2) Make sure no wires are touching any other wire or the metal surface of the amp. This will cause a short and send the amp into protect mode.

Nov 21, 2009 | Denon AVR-1705 Receiver

1 Answer

Flashes "protect"


I had the same problem. It's a voltage regulator (maybe 7812 or 7912) problem. In my case the problem was cracked soldering joints on the little PCB where the IC was soldered. Try this: open the case; on the sides of the big heatsink are attacched 2 IC Voltage Regulators. Check these ones for properly solder. After that I can power up my amp without problems.

May 27, 2009 | Sony Audio Players & Recorders

2 Answers

STR-DE475 receiver flashes "PROTECT" when turned on


Protection is usually a sign of overheating or something is wrong at the power amplifier's output.

Theory: Protection is a delay and sometimes an internal test to allow the electronics to stabilize during power up before they are allowed to interact with the speakers. The most common cause of it remaining ON is that a speaker cable pair is shorted. Some isolation is required...

1. Turn the Power OFF.
2. Disconnect each set of the speaker wires that are directly attached to the receiver. Mark them so you remember where each one went. pay special attention to which conductor is on "+" or "POS" and which is on "-", "COM" or "Ground". You may elect to disconnect them one pair at a time if your sytem is complex and you don't want to lose track of where things were.

Turn the Power ON. Is the "Protect" indication gone from the display?
--------------------
If YES, you have a shorted speaker wire or speaker. To isolate the specific cause:

1. Turn the Power OFF.
2. Attach ONE speaker wire pair at a time and test it by turning the Receiver ON. When the "Protect" light returns you have isolated at least one of the cause(s). Disconnect the defective speaker cable and continue isolation of all speaker cables. Visually examine the cable at both ends for frayed wires that could touch each other or contact metal on the receiver or other objects.

To isolate further within the cable/speaker pair - disconnect the speaker end of the cable on the failing path. Try another cable that you know works, or at least one that doesn't cause Protection to stay on.

If you're electrically savvy and have a Digital Volt/Ohm Meter you can troubleshoot the short(s) with it.
-------------------------

If NO, there is probably an internal problem.

Is it solid or does it come on after the Receiver has been ON awhile.
It could be overheating.
Is the unit hot to the touch?
Is there a cooling device (fan)?
Is it stopped or clogged with dust?
Is there adequate ventilation around the unit for air to flow?
Clean any ventilation slots on the top and bottom of the unit.
Avoid stacking components that produce heat under an amplifier or receiver. Their heat rises. Also keep them away from other heat sources like like home heating vents and radiators.

Problem solid and NOT related to the speakers or heat: internal malfunction.

Let me know.

Apr 02, 2009 | Sony STR-DE475 Receiver

1 Answer

Powers up but the power light flashes


This is an indication that the unit is protect mode. This means that a problem was detected in the output stage of the amp and the unit has shutdown to prevent further damage. If you can provide the make and model of the receiver, I should be able to give you more details about possible defective parts and costs.

Dan

Sep 15, 2008 | Audio Players & Recorders

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

Related Topics:

306 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts

kakima

Level 3 Expert

98868 Answers

 Grubhead
Grubhead

Level 3 Expert

4678 Answers

The Knight
The Knight

Level 3 Expert

69845 Answers

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

Answer questions

Manuals & User Guides

Loading...