OptimRepairs

They are designed to control industrial and laboratory processes via input  sensors which measure the process variables and output actuators which adjust the process conditions. 3504 controller can handles input types of Digital inputs, Thermal couple inputs, Pt100 inputs, 0-20mA analog inputs and many more. if you interested about full description, datasheets are available from manufacturers website. I received this unit for repair in full dead condition. there were no any physical damage. After removing the cover, i did not see any visible damage on the board.  There  were very complex board arrangement inside. i had to carefully disconnect and remove all boards to test components of main power supply. Testing procedure starts from AC line input. fuse, NTC and filter capacitors were fine. DC bus had 320V DC. but secondry side seemed dead. no voltage across filter capacitors at all. I tested supply voltage rails of SMPS switcher. that also showed 0V. but that can't be ha...

  Frame by frame animation can be played in this module. animations can be created using LED Matrix studio or manual pixel editing. pixel binary file then be uploaded to the board using a PC software. MTXProg software is the interfacing software for LED Matrix controller board. www.epsiconlabs.com is no longer available. OptimMachines and OptimRepairs are formerly Epsicon Labs. Board Documentation -  Download Technical Documentation Download Software (FREE FOR USE) -  Windows XP or Advanced versions If you wish to get more details about boards, please comment.....

  This device was designed and built by me to ease the welding process of cylindrical surfaces. User can start/stop the welding torch along the way during welding. cylinder rotates while the torch remaining in a fixed position. user can record the welding macro to automate the process. There are fixed number of steps to cover up full circumference of the cylinder. therefore we can calculate where to start/stop the welding torch during the cycle. How to teach the controller. First, user must switch the device into record mode. then user can operate the device to record the procedure of welding. device has COPIED the every step of  operation. from the second work piece, user can PASTE his recording endlessly. if you want more information about the device, please make a comment. 

  I was requested to visit the customer’s factory to inspect a flame cutting machine that was reported to be malfunctioning. According to the customer, several control panel buttons were unresponsive, affecting normal machine operation. Additionally, when attempting to set a specific cutting length, the machine head failed to stop at the programmed position. Instead, it continued moving beyond the desired point. Preliminary observation suggests that the stepper motors may not be holding (locking) properly at the commanded position, which could indicate a possible issue within the motor driver circuit, control signals, or the power supply to the motion control system. After removing the cover, i observed that there was iron dust all over the internal parts of the machine. therefore i started to clean one by one.       Upon detailed testing of the control system, all four relays on the relay board were found to be malfunctioning and operating unreliably. These relays w...

  These types of device is used to convert 320V DC bus into three phase AC for drive a motor. this device is not a VFD. it doesnot provide driving frequency. Servo amplifier has an interface to receive the drive signal from the external source. board has a red "Fault" indicator for display any fault that encountered during operation. Reported Symptoms A Haas 45A servo amplifier was received from the customer with an intermittent fault condition. Upon initial power-up, the servo amplifier started normally and indicated proper operation with the green status LED illuminated. The unit appeared to function correctly during startup and initial operation. However, after running for a period of time, the amplifier entered a fault condition. The green status indicator turned off and the red error LED illuminated, indicating a system fault. The issue was not immediate at power-up but occurred after some operational time, suggesting a temperature-related or load-dependent fault conditi...

  An ATX like industrial power supply received for repair. after some basic investigations, it was actually a ATX power supply with 24V power rail. Power supply came with complete dead condition.   Structure of this type power supplies,                                                                Total power supply consists of two separate power supplies. one is used for stand by supply and other is used for power delivery. Main power supply can output +3.3V, +5V, +12V, -12V, +24V. Circuit used for supply stand by power can deliver +5V with maximum 2A. Stand by supply was driven by TNY267 power converter ic. which is all in one( built in power mosfet) package. Since these PSU's have two separate power supplies, you can separately switch on each other. If stand by supply is not working, so...

  A Variable Frequency Drive (VFD) was received for service with a complaint of dim display and inability to control motor speed . The customer reported that although the unit powered on, the display was barely visible and the speed adjustment function was not responding properly. First inspection of the machine, I found corroded PCB's covered in dust.   HOW TO TROUBLESHOOT SUCH A MACHINE   Very important. Before start the repair, you must make sure that the device is repairable. time is money. don't invest your time on irreparable things. How to test repair ability, Check if it has a microcontroller,FPGA or any programmable device. Download the datasheet. diode test on all pins. Check supply rail impedance. Power up the IC, 1V below the rated supply voltage from bench power supply and check drawn current. Check the ic temperature. If diode test fail on some pins. isolate them from other connections and test again. if you have the datasheet, check for internal connections...

  Internal Working Principle of the Ice Cream Machine The ice cream machine operates using two primary mechanical systems: the refrigeration system and the mixing system. Each system is driven by an independent motor designed specifically for its function. One motor drives the compressor within the refrigeration unit, while the other drives the mixing mechanism. The refrigeration system, powered by the compressor motor, is responsible for removing heat from the ice cream mixture. As the temperature decreases, the mixture begins to solidify. Simultaneously, the mixing system continuously agitates the mixture to ensure uniform cooling, prevent ice crystal formation, and maintain a smooth texture. An important aspect of the machine’s operation is its method of detecting the consistency (thickness) of the ice cream. Instead of using a dedicated viscosity sensor, the control circuit monitors the current drawn by the mixer motor. As the mixture thickens, mechanical resistance against the...

  18 pre programmed patterns to select. User can select one or more patterns to run. Running speed can be controlled. Pattern loop count can be edited. 50 slot pattern memory. Complete introduction about this board are provided. you can download them using following links. User manual -  Download user manual Technical manual -  Download Technical manual with schematic Firmware source code -  XC8 source code   How to program and operate the module,

A customer brought in an inverter-type welding machine TAYOR WSM-250I with a complete “no power” condition. The unit showed no LED indication, no fan operation, and no output response when connected to mains supply. This document describes the systematic diagnostic process and final repair solution. External inspection showed no visible mechanical damage. However, upon opening the unit, the circuit boards were covered by dust layer. I had to clean the unit before testing for any fault. Later i observed that the main fuse for logic board power supply was open. Shows internal circuit of the welding machine Diagnostic procedure,                                             There are precautions to take before power up or insert power to these types of machines. the conventional lamp series method will not work for this type circuits. Bulk capacitors hold enough e...