Recent content by instrument

The front board is faulty somewhere, it made the mains transformer burn out. I found a new one, and the primary problem that caused the damage appeared. Few resistors start to smoke when power comes on, that's why I need to have the electrical scheme to find out where's the problem. Can someone...

Dear Dotol, it's not a problem to buy another charger with similar specs, not at all. As I can see from the pic you posted the output voltage is 14.4V at 2.5 amps which means you can use every charger with up to 18V and 3 or more amps of current. Don't warry about the variable voltage, the...

What kind of panel do you have - a LED or CCFL one? If it's CCFL then check the inverter board. The main board might be fine (changing the brightness settings changes the signal to the inverter board) but if the inverter board is faulty somewhere then the problem you described may be caused by it

Wireless gaming receiver? Brand? Model? I don't have a crystal ball beside me . . . . Something about the operating system and the computer itself? Motherboard? CPU?

Does the phone's bluetooth discover the headset at all? If not, you should start with the discover function before pair process. The headset should be turned on and it's LED should flash red and white. If the phone asks for pair code, enter 0000 to confirm pair process. If successfull, headset's...

How did you find out you have to lift the motherboard at all?! It has its stable place by screws on the chassis of the TV. All you have to do is check for broken solders where the ribbon cables begin. You must use magnfying glass, they're too small to see something like a crack on them. The fact...

Thanks for the fast reply, but I was thinking about all-electronic way to do this, something like electronic circuit with rectifier, MOSFET stage for example and PWM module (in the treadmill the speed control is realized the same way). Unfortunately I don't have a variac and I would like to...

Hi, I have a ZYT84-52 permanent magnet 180V DC treadmill motor, 1.25HP, 6.8A. I'm wondering how to drive it in 220V AC grid? With other words I need a circuit for speed control of this motor from zero to max with a potentiometer(stepless). Any ideas?

I have LCD TV SONY KDL-32BX300. My kid hit the panel with a toy and the matrix was broken. The TV uses a Samsung LTY320AP04 CCFL panel. It's hard to find one of this panels because they are obsolete. I was thinking, can someone say other models of Sony which do use the same panel (in order to...

Having solder skils is quite not enough to solve problems with such a complicated device like a LED TV. Such malfunctions need qualified service attention, there aren't customer serviceable parts inside in most cases. The problem may be inside the PSU board, but also some of the other boards may...

What do you mean under video cable? Is this the antenna input? What's the brand/model of the TV? I think it's not because of a broken socket (antenna, VGA), because the antenna input comes directly into the tuner but the VGA is solded directly on the board. If the problem was some socket...

What do you use the USB ports of the iPod for - charging, file tranfer? I'm not sure that the shortcuts are issues of using the USB of any way.