I have an HMI with vertical lines on half of the screen. These lines aren't scrambled garbage but rather very regular in pattern and color. I have replaced the LCD with a new one and still the problem persists. I'm wondering if this isn't indicative of a bad video process chip or video memory? Any help would be appreciated. The cable appears to be OK but one pin on the header is unpopulated, though there isn't any loose wire to suggest one broke off or popped out of the connector. In the... Read more ..read more

How do I replace and repair the USB charger port on my PARTY BEAT PULSE wireless Bluetooth speaker ..read more

I have a Zebra ZD621 that has an issue where the power button will not turn the unit on, but will turn it off. It only turns on when the power cable is plugged in. I've swapped the control board with a known good one, even swapped the cable. ANY help is appreciated ..read more

Hi guy my spinning decoy has given up the ghost , used it last week and it was fine , was going out sun put three sets of batteries in and just a hum , opened it up and checked and its not getting the full 6v , I took the diode out to check and seems ok , it has a rotary controller for speed and a switch which runs the motor or motor and led , the motor is fine tested it with 6v and its fine , be great if someone could point me in the right directions as must be something simple... Read more ..read more

Hi. I have a Xerox B215 printer. The problem with the printer is that every time I plug it in, it starts up for about half a minute, and then reboots in a loop. The problem happens even when the toner is out of the printer, even when I disconnected all the cables from the motherboard, except for the voltage cable that comes from the transformer board. Apparently the problem is with the motherboard, there is probably some component there that disconnects the power, which causes a reboot. I... Read more ..read more

Hello to the colleagues of the forum A KTS 1075 bluetooth speaker has come for repair. Now after the repair, the problem is that it resets at high volume and the sound of bluetooth and loading comes from the beginning. What is the problem? I checked the device with the power supply, there is no problem with the battery ..read more

Halo to all, is there anyone who has expirence with repairing of old Ansaldo Silcovert V VFD? There's always sign OFF on the display, it doesnt matter what I do? Does anyone has any idea or maybe the schematic of this machine? its 37kW VFD ..read more

Hello all. I bought an old oscilloscope from the internet the metrix os709 , the oscilloscope was worked like a charms when i got it, i was testing the device by injecting signals to it no, problem chanel A chanel B works after that i ve injected a signal from a mini AM battery powered AM radio to chanel A ? and then chanel B stops working but chanel A still working perfect. here are the symptoms when i select chanel B i have no trace, but when i trim chanel B volt division slowly... Read more ..read more

Hello everyone, I need help with identifying a transistor. I short circuited the gliding door mechanism while installing it, and the transistor broke down. I was hoping to see what was written on it once i removed it, but unfortunately not much is visible on it. Do you know what transistor i could use to get this replaced/fixed? Thanks in advance, Catalin ..read more

I want to replace caps in my charger (see thread https://www.electro-tech-online.com/threads/charging-slowly.163201/), but I couldn't find all of them exactly as the old ones. Can I use these instead? (old = new) 4.7µF 50V = 4.7µF 100V 330µF 6.3V = 330µF 16V ..read more