Question about Myryad M Series MDP 500 7.1-Channel Amplifier

1 Answer

Pre-amp locks up

After 10 to 20 minutes of operation the pre-amp locks up, usually with a "Myrtad MDP500 Powering-up" message. At tjis point the powerr button does nothing. The only way to get around the problem is to unplug the unit. I suspect a micro-processor problem. Is their a US repair service that anyone knows of? Is a schematic available. I have not received any response from my e-mail communications to Myryad.

Posted by on

  • 1 more comment 
  • Ronchino1964 Nov 28, 2007

    Hallo, I have the same problem whith the MDP500; last year I sent it to the repair center in Milano (Italy), and they kept it for almost three months, saing afther all that it did not showed any problem during their tests, and they sent it back to me. It worked well till one week ago, when the same problem showed up again. I don't know if I should sent it back to the Milano repair center, but it is the only one in Italy. I'm seriously thinking of changing product!

  • bobby caringal Jul 18, 2008

    I have my Myryad MDP 500, I bought last 2003. after I used it for a week the power start to turn off. I send it back to the Myryad distributor ( artech electronics) for service. after using it for another year it shows thesame problem, power suddenly turn off.

  • dor ohayon
    dor ohayon Oct 22, 2013

    Did someone fix the problem or find way does it happen?



1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 54 Answers

Check the repair dirctory at the bottom of this site

Posted on Dec 01, 2007

  • dor ohayon
    dor ohayon Oct 21, 2013

    where i can find the "repair dirctory"?



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.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

NHT sa-2 amplifier won't go into standby mode after 10 Minutes of no signal

Does the NHT sa-2 have it's own pre-amp? Because I'm wondering if the power off only works when it's own pre-amp is used? So when your receiver is connected it's shut off.

You could try something connected to it's own pre-amp (if it has one) and see if it goes off when there's no signal from that.

Jan 30, 2015 | Audio Players & Recorders

3 Answers

Does it matter at what time I take a pre-workout supplement?

Yes, Time matters a lot.
As your body needs some time to absorb all the nutrients and direct them to your bloodstream.
The best time to take pre workout supplements is 15-30 minutes before you start your workout.
If you want to get all detailed information about pre workout supplements and the guidelines to buy them then you can refer Weighted Training clothes.

Feb 04, 2013 | Health & Beauty

1 Answer

Can i hook up a power amp to my denon avr-3300 with out a pre-amp

Yes. Your receiver has the required pre-out connection terminals needed to go to an external amplifier. That would make your receiver operate as the pre-amp/processor.

Feb 21, 2012 | Denon AVR-3300 Receiver

1 Answer

Can I connect a turntable to my Sony mhc nx3av system which I got 12/13 years ago and it is great. Will it be accessed via the MD option? And must I get a turntable with a pre-amp? Thanks in...

YES, you can not only connect a turntable but also a VCR or DVD player or other analog audio sources using either of the top two RCA INPUT jacks on your unit. Now, for a turntable, you will need to buy a pre-amp because typically a turntable provides too low a signal level for most components to handle. These pre-amps cost $35 and up. Most turntables do not provide a pre-amp. Usually an amplifier or receiver will contain the pre-amp and have PHONO inputs specifically for a turntable. So you are correct, you need a pre-amp of some kind. Be sure to select the inputs on your Sony where you connected the turntable when you want to play records. Hope this helps.

Mar 14, 2011 | Audio Players & Recorders

1 Answer

Looking for sequence of operation for a lennox mid efficient furnace

When there is a Call for heat, the control delays ignition until combustion air

Blower operation has been proved and pre-purge period

Has elapsed. It then opens the gas valve and generates a

Spark to ignite the burners. Trial for ignition lasts for 7 seconds.

At the same time, the control begins monitoring the

Flame sensor. If the flame current is too weak (less than 1

Micro amp) or if the burners do not ignite (within the 7 second

Ignition trial), the control will shut off spark and the combustion

Air blower and de-energize the gas valve. Flame

Current should be between 1 and 5 micro amps to keep the

Gas valve open.

The control will attempt to ignite the burners up to two more

Times. Each time the control restarts the ignition sequence,

It begins with a 45 second pre-purge. If flame is not sensed

After the third trial, the control locks out. Lockout means that

The control shuts off the gas valve, spark and combustion air

Blower for 60 minutes. At the end of 60 minutes the control

Completely resets and will attempt ignition up to three times.

The control can be manually reset before the end of 60 minutes

By momentarily turning off power to the unit.

here is a link to an operations manual

Nov 25, 2010 | Heating & Cooling

1 Answer

How to reset voice record on my panasonic KXTG9331T?

Greeting message
When the unit answers a call, callers are
greeted by a greeting message. You can
record your own greeting message or
use a pre-recorded greeting message.
Recording your greeting
You can record your own greeting
message (2 minutes max.).
2 Within 10 seconds, press
3 After the base unit beeps, speak
clearly about 20 cm (8 inches) away
from the MIC.
4 Press {?} (STOP) to stop recording.
Using a pre-recorded greeting
If you erase or do not record your own
greeting message, the unit plays a prerecorded
greeting message for callers
and asks them to leave messages. If the
message recording time (page 39) is set
to “Greeting only”, caller messages
are not recorded and the unit plays a
different pre-recorded greeting message
asking callers to call again.
Playing back the greeting
Erasing your greeting
If you erase your own greeting message,
the unit plays a pre-recorded greeting
message for callers.
Press {GREETING CHECK}, and then
press {ERASE} while your greeting
message is playing.
Listening to messages
using the base unit
When new messages have been
recorded, the message indicator on the
base unit flashes.
Press {6}.
L If new messages have been recorded,
the base unit plays back new
L If there are no new messages, the
base unit plays back all messages.
Operating the answering
Key Operation
{^} or {V} Adjust the speaker
{7} Repeat message
(during playback)*1
{8} Skip message
(during playback)
Pause message
– To resume playback,
press {6}.
– To stop playback
completely, press
{?} (STOP) again.
{ERASE} Erase currently playing
*1 If pressed within the first 5 seconds of
a message, the previous message is

check if this works and tell me if any issues

Apr 30, 2010 | Panasonic KX-TG1033S Cordless Phone

1 Answer

ION turntable volume is low when plugged into a receiver.

Either the cartridge has failed, or an internal amp in the record deck has, or despite what you say the receiver has. I will clarify this for you. Magnetic cartridges need a pre-amp before it gets amplified by the pre-amp and power amp of your reciever. If that pre-amp fails you will still hear the low sound from the deck, but all others cd/tape would be normal as they don't go into the deck pre-amp.
All you need to is trace the circuit. Find the magnetic cartridge pre-amp and find where it joins with the pre-amp of the amp! If you stick a screwdriver at that point, you will get a buzz at normal volume on each channel. The cartridge pre-amp has gone if you do get a buzz!
You probably find it's a single IC that's gone, some are prone to static problems.

Jan 01, 2010 | ION Audio iTTUSB Turntable

1 Answer

Diagnostic Indicator

Beep codes and power LED status are pre-post errors. Usually beep codes indicate a problem with a memory module. Power LED is solid green for normal operation. Solid or blinking Amber color power LED indicates a power distribution problem.

Your responses are intended to improve the level of service provided. Please show your appreciation by rating your experience.
Thank You.

Nov 13, 2008 | Dell Dimension 2400 PC Desktop

1 Answer

I am trying to hook together a computer and a turntable(Turntable has its own pre-amp) & I need a diagram on what wire gos where?

OK. Since there is a pre-amp, all you need to do is to connect pre-amp output to Line-in input on the PC. This may be a bit of challenge as the connector on the pre-amp and computer are of different types. Usually, you need a cable with RCA connectors on one end and 3.5mm stereo pin (same pin as you have for stereo headphones) on the other.

Aug 17, 2008 | Sony PS-LX250 Turntable

Not finding what you are looking for?
Myryad M Series MDP 500 7.1-Channel Amplifier Logo

Related Topics:

156 people viewed this question

Ask a Question

Usually answered in minutes!

Top Myryad Audio Players & Recorders Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 3 Expert

5318 Answers

Gary Dumers
Gary Dumers

Level 2 Expert

131 Answers

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

Answer questions

Manuals & User Guides