meter 2nd light turns on later as usual after 1st light on awhile, still 0 reading and no volume.Observe if you hear relay click when second meter turns on.
Will need to test volatges of PSU.
Where to test PSU voltage U meant?
meter 2nd light turns on later as usual after 1st light on awhile, still 0 reading and no volume.Observe if you hear relay click when second meter turns on.
Will need to test volatges of PSU.
Measure B+ for output stage. Start by measuring at the bridge rectifier + pin, black probe to a ground point between the filter caps.meter 2nd light turns on later as usual after 1st light on awhile, still 0 reading and no volume.
Where to test PSU voltage U meant?
Sorry , is it AC or DC voltage?Measure B+ for output stage. Start by measuring at the bridge rectifier + pin, black probe to a ground point between the filter caps.
Then work your way from there to the filter caps, transistors and last caps of the psu.
DC. The bridge rectifier turns AC to DC so there's only DC after the rectifier.Sorry , is it AC or DC voltage?
Sorry , is it AC or DC voltage?
I got the reading 110volt DC, from rectifier both side , the other rectifier is 10 vDC both side, not sure is correct or not?DC. The bridge rectifier turns AC to DC so there's only DC after the rectifier.
What do you mean by 'both side'? You suppose to have your negative lead to ground when measuring DC. Please explain.I got the reading 110volt DC, from rectifier both side , the other rectifier is 10 vDC both side, not sure is correct or not?
There are 4 pin , positive pin read OL, negative pin cant get reading as voltage jump up n down , the other 2 pin 110VDC, thats what i get. I hope u can show me the picture which component voltage i suppose to measure, that would be easier I guessWhat do you mean by 'both side'? You suppose to have your negative lead to ground when measuring DC. Please explain.
I double check again , + pin 238VDC, - pin OVDC, the other 2 pin 110VDC, Thats mean something wrong with the rectifier or connection error?What do you mean by 'both side'? You suppose to have your negative lead to ground when measuring DC. Please explain.
Also, what do you mean by other rectifier? Do you mean for the driver stage? Dont worry about driver stage for now. But no, 10V is not right.
You should have about 135 - 140VDC at + pin and -135 - -140VDC at - rectifier pin.
Cant show picture now as Im at work. Based on your measurements I think you're measuring the driver stage rectifier. In that case voltages are good there.I double check again , + pin 238VDC, - pin OVDC, the other 2 pin 110VDC, Thats mean something wrong with the rectifier or connection error?
The other +pin read 21.5VDC and -pin 0VDC, the other 2 pin both read 10.35VDCCant show picture now as Im at work. Based on your measurements I think you're measuring the driver stage rectifier. In that case voltages are good there.
Measure output stage rectifier. Its located by the relay and the big filter caps. It looks just like the driver stage rectifier.
Only measure the + and - pins. The other pins are AC voltage input.
Is that before or after the second meter light up? You must wait for that and then measure.The other +pin read 21.5VDC and -pin 0VDC, the other 2 pin both read 10.35VDC
after all light up result, I know that suppose to be 135VDC, I will check the connection again make no errorIs that before or after the second meter light up? You must wait for that and then measure.
Measure at same points that were measured on the PSU picture posted first page.Where to test PSU voltage U meant?
I have checked all the AC in wire n perfect match:Measure at same points that were measured on the PSU picture posted first page.
Check for similar voltage.
If you need help someone to show you it would be wise to get help from any electrical engineering student or electronics person.
Its ok to try yourself as long as you are carful.