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Old 07-10-2019, 08:18 PM   #21
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Default Re: Turn 100v X-box 360 adapter into 250v

Or just use the 53 W you have right now and just do not connect the load to the power supply, the power supply will be in stand mode any way since the PS-ON will not be present so the power supply should draw very little current.
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Old 07-11-2019, 09:39 AM   #22
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Default Re: Turn 100v X-box 360 adapter into 250v

Allright I've made the load test and there was no fire (Must have done something wrong(grin))
When the PSU is not connected to the Xbox I get a few ms of light on the bulbs and the PSU shows amber light.
When I connect the PSU to the Xbox and turn on the Xbox the bulbs turn on bright for 1 sec or so and the Xbox starts and the amber light turns green, then the Xbox turns off the green light turns amber again and no light on the bulbs.
Is the Xbox not turning on because of the light bulbs?
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Old 07-11-2019, 09:56 AM   #23
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Default Re: Turn 100v X-box 360 adapter into 250v

Without having it connected to the XBox, do you get 5V the 5V wire?
The power supply draws < 2W in standby mode (PS-ON is not present but 5VSTBY is present), then it will draw lots more current when it is fully turned on and loaded.
At this point since the 53W lamp did not stay full bright (no load (Xbox) to the power supply), it looks to be working.
1) You can now take a chance running the power supply without the 53W lamp in place.
2) Or use 1K resistor between 5V STBY and the PS-ON pin then check and see if the switched 12V is present or not (no load (Xbox) connected to the power supply, but the 53W lamp is still in place).
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Old 07-11-2019, 11:32 AM   #24
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Default Re: Turn 100v X-box 360 adapter into 250v

I have 57W and 40W bulb connected.
The 5v wire gives me 5v.
I placed the resistor in and measured 12.45v and it ran fine for 7 seconds or until I disconnected it, had the bulbs connected.
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Old 07-11-2019, 11:58 AM   #25
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Default Re: Turn 100v X-box 360 adapter into 250v

go go go time for the Halo test without the DBT
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Old 07-11-2019, 12:38 PM   #26
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Default Re: Turn 100v X-box 360 adapter into 250v

Quote:
Originally Posted by playman View Post
I have 57W and 40W bulb connected.
The 5v wire gives me 5v.
I placed the resistor in and measured 12.45v and it ran fine for 7 seconds or until I disconnected it, had the bulbs connected.
Go ahead then without the lamp in place.
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Old 07-11-2019, 02:32 PM   #27
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Default Re: Turn 100v X-box 360 adapter into 250v

Just plugged it in and it powered on normally.

Thank you so much for all that help!!
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Old 07-11-2019, 04:51 PM   #28
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Default Re: Turn 100v X-box 360 adapter into 250v

Cool. another piece of electronics that would have been tossed in the trash salvaged for reuse!
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Old 07-11-2019, 05:09 PM   #29
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Default Re: Turn 100v X-box 360 adapter into 250v

well done . i would of course waited till i had another supply the same and wired in series to see what happens .
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Old 07-11-2019, 08:06 PM   #30
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Default Re: Turn 100v X-box 360 adapter into 250v

I had to hack a Xbox PSU for a bit higher voltage (13.8V instead of 12V, instead of upping the input voltage), was kind of annoyed at it because apparently they glued the SMT devices to the board along with the solder. GRR!
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Old 07-12-2019, 03:04 AM   #31
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Default Re: Turn 100v X-box 360 adapter into 250v

the glue is because it was wave-soldered,
philips used to make all their tv's that way.
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Old 07-13-2019, 08:59 AM   #32
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Default Re: Turn 100v X-box 360 adapter into 250v

Makes rework that much harder...

Any good suggestions on how to deal with it, apparently mechanical force is one way though that has a risk of damaging the PCB...
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Old 07-13-2019, 12:44 PM   #33
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Default Re: Turn 100v X-box 360 adapter into 250v

when the glue warms up it gets soft,
i used to use tweezers to twist the part loose after the solder melts.
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Old 07-15-2019, 12:52 AM   #34
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Default Re: Turn 100v X-box 360 adapter into 250v

Then the question is how do you know when the solder melted? That weird forked wire tool that comes with cheap chinese hot air guns becomes ineffective with glue, and tweezers have the possibility of dissipating heat causing the solder to resolidify...

At least that was really annoying to remove those things!
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Old 07-15-2019, 02:43 AM   #35
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Default Re: Turn 100v X-box 360 adapter into 250v

you use the tweezers to hold the sides, not the contacts.

if it's a bigger package - like a chip, then melt the solder and flip the package by slipping the tip of a knife under the edge that has no pins.
if it's 4 sided - use a corner.
the "snap-off" blade knives are best - nice and long to keep fingers away from the heat.
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