About series bulb tester

[senz_90]

while couple a days, i built series bulb tester based on googling. it built with 62watt bulb. the one i wanna ask about the result is the bulb blinking fastly when i tested it with my psu 450watt that are tried to fixing..i know that when the bulb light for 2-3 seconds and dim after that means that no shorted components anymore. if the light just bright fully it means that still shorted in psu...

so what is that blinking result means??
any advice really appreciated..
for note i just trying fix my psu that has no voltages before, just +5VSB. after found some defective's. it has a voltage agains on rails :
12v reads about 11.7v
5v reads about 4.8v
3.3v reads about 2.8v

and the black(ground) cable makes a little deflection when my black leads probe touching it? ??

[goontron]

Re: About series bulb tester

my rule of thumb is the ballast(bulb) needs to be the same wattage as the psu outputs, in this case 400watt but thats because i have adapted to using different ways of 'testing' using mainly heating elements, but i don't know what wattage to use for bulbs, by any chance are you using those curly bulbs?

[senz_90]

Re: About series bulb tester

my rule of thumb is the ballast(bulb) needs to be the same wattage as the psu outputs, in this case 400watt but thats because i have adapted to using different ways of 'testing' using mainly heating elements, but i don't know what wattage to use for bulbs, by any chance are you using those curly bulbs?

i just think this psu doesn't have real wattage liked written in the case..it don't have filtering coil, Y or X caps evenmore..the bulb that i using is the fluorescent lamp internally ballast usually be used at home. not curly, just like a straight line but it just different on shape i guess..sorry for bad english. heating elements likes element to makes water boils?

[goontron]

Re: About series bulb tester

i just think this psu doesn't have real wattage liked written in the case..it don't have filtering coil, Y or X caps evenmore..the bulb that i using is the fluorescent lamp internally ballast usually be used at home. not curly, just like a straight line but it just different on shape i guess..sorry for bad english. heating elements likes element to makes water boils?

yes, the heating elements i used are tea kettles.

[senz_90]

Re: About series bulb tester

yes, the heating elements i used are tea kettles.

how u connect it? would u mind
give a toughly schematic?

[cheapie]

Re: About series bulb tester

the bulb that i using is the fluorescent lamp internally ballast usually be used at home. not curly, just like a straight line but it just different on shape i guess

That's the problem. Dim bulb testers must use incandescent bulbs. Fluorescent will not work properly.

For connecting a ballast, just replace the light bulb socket in your tester with an electrical outlet. Then, plug whatever ballast you choose into that outlet.

However, it does sound like your PSU is not shorted, and would be safe to plug in directly now.

[senz_90]

Re: About series bulb tester

That's the problem. Dim bulb testers must use incandescent bulbs. Fluorescent will not work properly.

For connecting a ballast, just replace the light bulb socket in your tester with an electrical outlet. Then, plug whatever ballast you choose into that outlet.

However, it does sound like your PSU is not shorted, and would be safe to plug in directly now.

lol. i have misunderstanding about the bulb.. it does means my PSU fine with blinking result from your statement "it does sound like your PSU is not shorted"? i know the bulb that i have used is wrong, but the statement give me some hope to get it back from dead..

[cheapie]

Re: About series bulb tester

lol. i have misunderstanding about the bulb.. it does means my PSU fine with blinking result from your statement "it does sound like your PSU is not shorted"? i know the bulb that i have used is wrong, but the statement give me some hope to get it back from dead..

Fluorescrents tend to blink or not light at all instead of being dim. The bulb lighting constantly in this case would indicate a short, while the flashing is indicating that there is not a short. Also, you mentioned that you are getting output from the power supply. If it was shorted, there would be no output.

[senz_90]

Re: About series bulb tester

Fluorescrents tend to blink or not light at all instead of being dim. The bulb lighting constantly in this case would indicate a short, while the flashing is indicating that there is not a short. Also, you mentioned that you are getting output from the power supply. If it was shorted, there would be no output.

i got it. but my black ground cables has a voltage in rails. strange.. i have checks all diode but there was not shorted..maybe i' ll post my PSU photo to give you some signed that i missing. i just try fixed it myself because i wanna challenge myself to troubleshoot that psu without just asking and get the defective one's without struggles from myself..