First I check power supply source is enable of disable. If it enable then I check my using device.
You need to describe symptoms. Check oscillator frequency and power supply.
To supply power to Fans, Drives, Motherboards, processors, Ram.
when unplug ed and plug ed the power switch relay will make click if supply is in working condition to circuit. so compressor if not working the means no sound then definately it is in problem.
If it's a laptop, it's running off of the battery. Otherwise, it has a very adaptive power supply... but you shouldn't run your computer in that condition (called a Brownout)
LED light strips may not be working due to issues such as loose connections, faulty power supply, or a defective strip. Check the connections, power source, and strip itself to troubleshoot the problem.
If it is a computer power supply then the fan is one of the main cooling fans for a PC. If it is not working then there is an extremely good chance that the system will overheat and shut down at best, be damaged at worst.
Your garbage disposal may not be working due to a clog in the drain, a malfunction in the motor, or a lack of power supply. It is important to check for these issues and troubleshoot accordingly to fix the problem.
IPS is instant power supply that is a backup system that start when main energy not available.
CHECK the battery may be its dead check the plug and connect it properly other wise buy new. do not connect it again and again its not save for systm
The power supply provides electricity that support current to allow the component to run. For example: (The motherboard) the motherboard is useless without the help of power supply. Any component or hardware were useless without the power supply.
Connect Pin No. 14 & 15 on SMPS, if the fan moves then SMPS is working fine else SMPS is faulty.
The display is probably freezing because the grafic card or processor is getting to hot. When this happened to me I had to install more fans in my computer case to help cool the system. R. > Check your power supply, It could be bad.