Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
Does someone have the technical map of this power supply?
Does someone have the technical map of this power supply?
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
Is this not a skid mark around this transistor? I do believe whatever this is has puked it's guts.Popcorn.Comment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
No
You have a lot of bad soldering joints when you see a ring around the joints those need to be reworked
I would recommend replacing all capacitors that are less than 100uf
at a minimum
It would be better if you replace all the caps except the the main capacitorComment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
I had to pack up this project due to moving and am now getting back into the stash. I'm doing some more inspection and measurements and will respond shortly.
Anyone else have experience with this model PSU or similar?
Thanks for all the suggestions thus far.Comment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
R7 looks okay to me.
Just the plastic insulator on top, all the caps look good (not by brand though, obviously).
I'm going to check the transistors for shorts and see what shows up.Attached FilesComment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
Found some shorts!
Q7, Q8
D7, D?
Attached FilesComment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
Well, I found some of the bang! Looks like R9 spilled it's guts because ... ?
Attached FilesComment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
... Q5 and Q6 are shorted. 6R190C6
Attached FilesLast edited by bcstedt; 08-01-2020, 08:40 PM.Comment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
and q5 & 6 are driven by what?
that has to be checked nextComment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
Driven by CM6800G!
Any thoughts on replacing the 6r190c6 with 20N60C3 or FCP20N60 (ON Semi) or ... ? I'm searching for details on issues or reliability related to these FETs and found a few situations where these substitutions were made. Also, in one review of this PSU they show the 20N60C3 instead of the 6r190c6.
Just curious.Attached FilesComment
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Re: Thermaltake ATX supply goes BANG! - TR2 RX-750
Yeah me thinks IPx60R190C6 and 20N60 look like equivalents.
Think that 500V FET should be fine as well, it's two-forward when it has CM6800 without even looking, and most of them usually only had 18N50s (or 20N50s when over 600 W). Depends on what you can find around.Less jewellery, more gold into electrotech industry!
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time... -
Hello Everybody,
Trying to repair a power supply from a Russound CA4 Multizone Controller (picture attached)
Russound no longer supports it but were kind enough to provide a schematic of the power supply (pdf attached).
The outputs marked 12v and 20v are all measuring only 1v.
The board is clicking, which I think means it is in something called hiccup mode when the flyback transformers switches because of an internal problem or something else on the board Overloading it.
The capacitors physically look clean (no bludgesor leaks) and... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles...
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