Need help BFG/GR650WGSPSU

[Philly Cheese Steak]

Hello all!
First off I'm a total noob, so please assume I don't know the terms of stuff you post. As I probably will not..... Anyway I bought this unit of of Flee bay for a friends computer I'm building, so if its not worth fixing just say so. I'd like to fix it and use it in a mild build for mostly internet cruising.
That said I kinda know how to use a meter, I got a blue point(fluke wanna be) but the battery was in it so long the terminals are corroded. And I may have to splice in a new connection from radio snack. I opened this unit up, first thing I noticed was it was full of dust bunnies. Then flipped it over and found burnt traces underneath it, the peace that had the burns is removed already but I know that simply slapping a new one in is not all that I need to do with it.

A. I don't even know this parts name
B. How do I go about testing it
C. Again Don't assume I know anything, but I'm very teachable!!!

THANK YOU IN ADVANCE!!!

[joshnz]

Re: Need help BFG/GR650WGSPSU

The part that has failed is called a bridge rectifier, It may have been damaged from many thing or just failed.
You will need a multimeter

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

Thank you Joshnz!
I got one, but have to repair it as it sat with the battery in it so long the connectors are corroded. So I'll have to go by Radio snack to get a battery adapter. I got a blue point multimeter from about ten years ago, its a Fluke wanna be.
Keep the info coming.......... I'll get the multi up and running by tomorrow.

[370forlife]

Re: Need help BFG/GR650WGSPSU

It's a older Topower built BFG, it will do 500W barely in spec at room temp, so unless you are running a real high end computer it should do fine.

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

COOL!
Thank you 370!
Multimeter in hand, next?

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

So I'm assuming here that cause its marked with "1006" that it is 10A 600V and that KBU is the manufacturer? As on its face it has "KBU 1006", I was searching Flee bay for a replacement it seems all the number correspond to the Amps and the voltage?
Examples
A. GBU 406=4A 600V
B. KBP 206=2A 600V
C. KBJ 2510=25A 1000V

Also hard to find a 10A 600V on Flee bay, if anyone would suggest? I will check this site, again Thank you for any and all help.

[joshnz]

Re: Need help BFG/GR650WGSPSU

Hi I have marked points of interest.

The fuse marked in yellow will be blown can be verified with you meter set to 200 Ω should read less than 1Ω
.
The varister marked in cyan should read less than 20Ω.

On the 200Ω range put red probe where red circle is and black probe on the black circle hold it there for a while let me know the results.

On the white rectangles measure between
1 (red probe) 2(black probe)
2 (red probe) 1(black probe)
2 (red probe) 3(black probe)
3 (red probe) 2(black probe)
1 (red probe) 3(black probe)
3 (red probe) 1(black probe)

4 (red probe) 5(black probe)
5 (red probe) 4(black probe)
6 (red probe) 5(black probe)
5 (red probe) 6(black probe)
6 (red probe) 4(black probe)
4 (red probe) 6(black probe)
let me know for each or those combinations.

[joshnz]

Re: Need help BFG/GR650WGSPSU

So I'm assuming here that cause its marked with "1006" that it is 10A 600V and that KBU is the manufacturer?

10A 600V is correct.
KBU is just part of the part number to help identify it.

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

Josh,
Yes the fuse reads 0, the Varister reads 3.2 Ohms.

On the 200Ω range put red probe where red circle is and black probe on the black circle hold it there for a while let me know the results.

It started off @12.(something) then incremented down to 0

On the white rectangles measure between
1 (red probe) 2(black probe)

It starts off @ 0.527

2 (red probe) 1(black probe)

3.80 slowly decreasing

2 (red probe) 3(black probe)

2.90 slowly decreases

3 (red probe) 2(black probe)

0.521

1 (red probe) 3(black probe)

2.65

3 (red probe) 1(black probe)

2.65

4 (red probe) 5(black probe)

0.522

5 (red probe) 4(black probe)

2.28 increasing

6 (red probe) 5(black probe)

0.525

5 (red probe) 6(black probe)

0.560 increasing

6 (red probe) 4(black probe)

2.65

4 (red probe) 6(black probe)

2.65


Thank you!

[joshnz]

Re: Need help BFG/GR650WGSPSU

may need to remove the transistors to get better results.

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

may need to remove the transistors to get better results.

UGH!
Those are the one's I was testing right? I just realized I read them back wards, the contact points, I'll redo it in the morning!
Again Thank you Joshnz!

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

OK,
Sorry busy at work my first chance to jump back at it, I had your list back wards Joshnz. And now the right readings need more ask.............

1 (red probe) 2(black probe)
0.61
2 (red probe) 1(black probe)
3.20
2 (red probe) 3(black probe)
3.05
3 (red probe) 2(black probe)
0.542
1 (red probe) 3(black probe)
2.66
3 (red probe) 1(black probe)
2.66


4 (red probe) 5(black probe)
0.521
5 (red probe) 4(black probe)
3.30
6 (red probe) 5(black probe)
0.500
5 (red probe) 6(black probe)
0.499
6 (red probe) 4(black probe)
2.65
4 (red probe) 6(black probe)
2.65

THANKS!

[PCBONEZ]

Re: Need help BFG/GR650WGSPSU

http://search.digikey.com/scripts/Dk...e=GBU1006DI-ND

For 2 cents more you can upgrade by 5 amps.
http://search.digikey.com/scripts/Dk...GBU15J-BPMS-ND

[b700029]

Re: Need help BFG/GR650WGSPSU

Wouldn't 10A be more than enough? At 120V input 10A would mean 1.2kW input power.

[PCBONEZ]

Re: Need help BFG/GR650WGSPSU

Considering it blew [and don't really know why] for 2 cents I'd upgrade anyway.

[joshnz]

Re: Need help BFG/GR650WGSPSU

PCBONEZ do those readins look to low to you?
Philly Cheese Steak
If it were me I would have gotten the part numbers for the transistors and got the datasheet for them those reading look to low to me.
also what type of meter are you using.

[PCBONEZ]

Re: Need help BFG/GR650WGSPSU

PCBONEZ do those readins look to low to you?

Yes. - Assuming it's out of the circuit to measure as it should be.
Should be open or at least very high in one direction. [Depends on meter.]
... And very low in the opposite direction.

Part of the reason I linked to the parts was to show these aren't like expensive or anything.
.

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

PCBONEZ do those readins look to low to you?
Philly Cheese Steak
If it were me I would have gotten the part numbers for the transistors and got the datasheet for them those reading look to low to me.
also what type of meter are you using.

Hey Joshnz!
I got a radio shack Digital Multimeter, as i recall it was around fifty bucks a few years back. Its the one that can fold closed and fit in your pocket, don't see a model number on it any where.
I got a better meter if you think this one may be off, its the fluke wanna be from Snap on. Only reason i used this one was the connection had corroded on the battery. I assume I can solder the battery in place to use it....

[PCBONEZ]

Re: Need help BFG/GR650WGSPSU

Does your meter auto-range?
If it's changing ranges on it's own that might explain it.
.

[Philly Cheese Steak]

Re: Need help BFG/GR650WGSPSU

Does your meter auto-range?
If it's changing ranges on it's own that might explain it.
.

I'm guessing it does as when I'd try to take readings from certain points, it would start out at like say 0.260 then begin to climb and continue for a while. If you think the blue point would do better, I can post up the same readings with it.