20 Most Recent Samson Servo 170 Amplifier Questions & Answers

It sounds to me like you could have mains hum breaking into your system because the large Electrolytic Capacitors in the power supply of your amp have failed.

Samson Servo 170... | Answered on Jun 22, 2013

check see if youy have some coving the vent or the speak connect right

Samson Servo 170... | Answered on Aug 05, 2012

Oh dear! Protection system has detected a short in the main power amp. The water has caused a great deal of damage. You will have to replace all the parts that have been damaged. Your nose will lead you to where to look.

Samson Servo 170... | Answered on Jun 28, 2012

The amplifier have problem with the out put drive section. Repairing of such an amplifier should be done by a skilled person. there should be need of repacing so many components if the out put driver transistor is short. If you make any mistake the components you change will also go in to fire.


Samson Servo 170... | Answered on Apr 01, 2012

cost, for parts, shouldn't be over $20US. You can get both at any electronics supply house. Then there's always Radio Shack.....you could get lucky! take the amp with you.

availability shouldn't be an issue.

Good Luck!

Samson Servo 170... | Answered on Sep 03, 2011

It sounds like the problem is just a bad soldering joint somewhere.

Samson Servo 170... | Answered on Jul 10, 2011

It's either overheated or you may have faulty speaker wiring or a shorted speaker. These directions come from a Samson servo 120a but the theory is the same.

The following conditions will cause the Protection LED to go on:

Initial power-up: For approximately five seconds after initial power-up, the relay

speaker connection circuitry is deactivated and the speaker output is muted. If everything is operating normally, you will hear an audible click at the conclusion of this brief period, as the circuitry is activated and the Servo 120a begins delivering signal to connected speakers (at which point the Speaker LED will light if the Speaker on/off switch is in its "in" position). It is normal for the Protection LED to fade gradually after the amplifier is powered off.

Overheating: A temperature sensing device in the Servo 120a will cause the relay speaker connection circuitry to be activated (and the Protection LED to go on) whenever the operating temperature of the unit rises above a safe level. To guard against this problem, make sure the Servo 120a receives adequate ventilation on all sides ; in extreme environmental conditions, you may also

want to consider the use of cooling fans.

Severe overcurrent conditions: This occurs whenever the signal being output

from the Servo 120a rises to a level above 20% THD (Total Harmonic Distortion).

Shorted speaker cables: This will occur if, due to faulty wiring, the hot and ground signals being output by the Servo 120a short to one another.

Output impedance drops below 2 ohms: This can occur if the Servo 120a is connected to inappropriate speaker systems (see the "Setting Up and Using the Servo 120a" section in this manual for more information).

DC voltage detected at speaker output: The most likely cause of this is an internal failure. In general, any time the Protection LED lights up (other than during the approximately five seconds following initial power-up), there is reason to be concerned. If this occurs, turn the Servo 120a off immediately and carefully check all wiring and external devices in order to locate and correct the condition that caused the LED to light up in the first place.

Samson Servo 170... | Answered on Dec 27, 2010

Does the hum occur when the levels are all the way down?

1st thing to check is for a broken input jack

2nd thing would be power supply capacitors gone bad

Samson Servo 170... | Answered on Aug 17, 2010

Disconnect your speakers and see if the same thing happens. If it does not, then you have a problem with your speakers - possibly too many wired in parallel. If the amp. still shuts down, then it'll have to go in for repair.

Samson Servo 170... | Answered on Jul 24, 2009

Yes, but stay within the "ohms" limit of the amp.(probably 4 ohm or greater)

Samson Servo 170... | Answered on Jun 13, 2009

One of the channels in the amp is bad. That channel will need tobe replaced. You may need to take it to a repair shop.

Samson Servo 170... | Answered on Nov 12, 2008

my friend resistors and diodes don't just go off your circuit without a real problem. those parts gave up because of shortage on your power section, i suggest that you check your power transistros first along with the diodes and resistors.

noisy transformers... hmmmm why is that making sound? the solution there is to dip the power transformer to a thick shellac varnish let it there for let's say an hour then let it dry for a day. then place it back in your unit and see if still sounds

Samson Servo 170... | Answered on Aug 14, 2008


Samson Servo 170... | Answered on Dec 17, 2007

There are 2 ways to mute or un-mute the mic:
  1. Push the button on the front of the mic
  2. On the computer, open Recording Properties and go to the Levels tab and click the speaker icon next to Microphone slider.


Samson Audio... | Answered on Jun 10, 2020

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