Coolsat 8000 broken
- Thread starter rrob311
- Start date
Check the capacitors in the power supply
First check the capacitor for obvious defects, leaking, bulging at the top or sides.
You can use an analogue multimeter as an ohmmeter to test the capacitor. Remove the capacitor from the circuit board, if the board is not marked, mark where the negative lead goes into the board, You'll want to replace it exactly as removed.
Discharge the capacitor by shortening its leads. Use a wire and connect the leads of the capacitor together.
Put your multimeter in the high ranges 10K-1M. Connect the multimeter to capacitor leads making sure you connect the positive to positive lead and negative to negative lead. As the leads make contact,the meter will register near zero. It will then raise slowly to infinity. The meter will register infinite ohms because the capacitor is being charged by the meter.
If the capacitor is no good(in this case shorted),it will register at zero ohms and stay there.
If the capacitor is open (still no good) there will be no reading on the meter.
Sometimes I use the voltage setting on my meter and put the negative lead on the ground on the circuit board and placing the positive lead on the tops of the electrolytic capacitors ( cylinder types with metal tops) for about 5 seconds, I find where the voltage is usually not what it should be, more time than not is is lower. Hope this helps
You can use an analogue multimeter as an ohmmeter to test the capacitor. Remove the capacitor from the circuit board, if the board is not marked, mark where the negative lead goes into the board, You'll want to replace it exactly as removed.
Discharge the capacitor by shortening its leads. Use a wire and connect the leads of the capacitor together.
Put your multimeter in the high ranges 10K-1M. Connect the multimeter to capacitor leads making sure you connect the positive to positive lead and negative to negative lead. As the leads make contact,the meter will register near zero. It will then raise slowly to infinity. The meter will register infinite ohms because the capacitor is being charged by the meter.
If the capacitor is no good(in this case shorted),it will register at zero ohms and stay there.
If the capacitor is open (still no good) there will be no reading on the meter.
Sometimes I use the voltage setting on my meter and put the negative lead on the ground on the circuit board and placing the positive lead on the tops of the electrolytic capacitors ( cylinder types with metal tops) for about 5 seconds, I find where the voltage is usually not what it should be, more time than not is is lower. Hope this helps