Service & Maintenance


...The Service real advertisement is
the recommendations of satisfied clients

Service started his activities immediately after the creation of Congress ENGINEERING with the purpose of full coverage of the company services, as well as repairs of external professional audio-video equipment.

Since its creation the Service was equipped with last generation of diagnostic and test equipment. This equipment facilitated our job and minimized the time, necessary for repairing the professional equipment.

The service engineers possess rich experience, accumulated during many years. They use most state-of-the-art equipment for diagnostic and troubleshooting the audio and video equipment. They have full service documentation and use internal networks with limited access over internet with rich database.

As a matter of routine, the service engineers are able to develop individual designs for specific equipment. Then they proceed to projection and preparation of the necessary printed-circuit boards and finally, activation and adjustment of the whole system. The outer housing, as well as the outer design depends on the client’s wish, with use of the latest technologies of successful companies.

The Company has entire disposal of enough storage on hand of most frequently used components and modules. In a combination with available professional instruments and devises it achieves fast and easy troubleshooting of costly appliances.

The Service is entirely specialized in repairing of professional audio-video equipment. Unfortunately the colorless copies of professional equipment are not among the service priorities. Their realization very often impedes the repairs and makes them aimless expensive.

The Service focuses in the specialized equipment for simultaneous interpretation, discussion microphone systems, multimedia projectors, as well as large part of A/V equipment of leading companies that our company sells.

Simultaneous interpretation equipment Discussion microphone systems Multimedia projectors
Computer equipment PA systems
Video systems

The Service offers after sales service as well as out of warranty support of each purchased out of Congress ENGINEERING conference, audio and video equipment.

All equipment is supported out of warranty.

After finishing the repairs we perform overall prevention of the equipment as well as examination and readjustment of all blocks of the equipment.

Instek GDS806S - Digital Storage Oscilloscopes 100 MHz Bandwidth

  • 100 MHz Bandwidth; Colour LCD Display
  • 125k Long Memory with 12 Divisions of Horizontal Display
  • 25 GS/s Sampling Rate for Repetitive Waveforms
  • Advanced Trigger Modes: Pulse Width , TV Line, Event Delay and Time Delay
  • Go/NoGo and Auto Setup Sequence
  • FFT Function
  • Built-In Help Menu, Multi-Language Capable
  • Includes RS-232C Interface and PC Software

Data sheet (147kB) »

GPS Multi-Output Series D.C. POWER SUPPLY

  • Four Independent DC Outputs
  • Four LED Display with 3 digits
  • Output Voltage and Current Displayed Simultaneously
  • Auto Series, Parallel and Tracking Operation
  • Constant Voltage and Constant Current Operation
  • Overload and Reverse Polarity Protection
  • Selectable for Continuous/Dynamic Load
  • Output Enable/Disable Control
  • Variable Speed Fan

Data sheet (54kB) »  

Instek GAG-810 1 MHz Low Distortion Audio Generator

  • Frequency Range: 10 Hz to 1 MHz, 5 ranges
  • Output Voltage: 5 Vrms (600 Ω load)
  • Output Impedance: 600 Ω ±10%
  • 0.02% Low sine wave distortion
  • 6 steps output attenuator
  • EXT SYNC Function
  • Power Source: 100/120/220/240V ±10%, 50/60Hz

   Data sheet (889kB) »

MS8211 Pen-type multimeter

  • Conforms to the IEC1010-1 standard Cat III 600V
  • Over-molding rubber case protects meter; Display
  • 1,999 counts
  • Auto/manual range
  • Maximum value hold
  • Data hold
  • Auto power off
  • DCV: 200m/2/20/200/600V +/-0.7%
  • ACV: 200m/2/20/200/600V +/-0.8%
  • Resistance: 200/2k/20k/200k/2M/20M +/-1.2%
  • Continuity test
  • Diode test
  • Non-contact AC voltage detector
  • Detects AC voltage of special frequency
  • Sensitivity of AC voltage adjustable
  • Sound and flash alarm
  • Power: 1.5V (AAA) x 2
  • Size: 208 x 38 x 29mm.

   Data sheet (737kB) »


  • In conformity with IEC 1010 CAT. 2
  • Protected by body cover that also serves as a stand. Carrying case is not required.
  • Enables you to measure high resistance (up to maximum 200M ohm)
  • Capacity-measurement function(0.1 F-10 F).
  • Overload protection up to maximum 230V is provided.
  • High sensitive taut band meter with shock protection is equipped.
  • Provided with short strap for easy hand-carry.

Data sheet (679kB) »  

Paccs - Cable Tester

Cable Tester for all types of cables XLR, Jack, Speakon…