need the part number for q7 on the power suppy board fsp22-3f01
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Re: view sonic 3260w
"a major issue with these supplies is q7, a small surface mount npn transistor. When this puppy goes bad, the supply pulsates, meaning your +5v line may run from 4.0-5.9 and it oscillates back and forth. It also causes I believe c36 to fail as well. Replace this transistor, I use any reasonable npn transistor and u should be fine." -
Re: view sonic 3260w
Thanks I have subed a 2n222a and still have 5v . I also removed the zener d4 for testing and may have reinstalled it in reverse . After 75 years you start to do things like this can you give me the correct orintation of the diode ?Comment
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Re: view sonic 3260w
On most boards, manufacturers denote the orientation using a line (or stripe) on the PCB to indicate the cathode side should be oriented towards that stripe.Comment
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Re: view sonic 3260w
I just got a Viewsonic N3250W the other day someone decided to repair themselves (see the attached image). The power supply is a updated version of the fsp212-3f01, the fsp212-3f02.
Anyhow, notice the stripes which indicate the orientation.Attached FilesComment
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Re: view sonic 3260w
Thanks I had it installed right . I noticed how you subsited the diode good idea when you cant find an smd .Comment
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Hey guys, I'm feeling like a noob trying to get flexbv to work to be able to download and view a particular board view of a mac mini 2018. Ive tried to read how to use the open board data but it's appearing to be a little confusing on how to actually look up a particular boardview. I'm using the free version to get my feet wet with the software. Ive checked to make sure under the program preferences the openboarddata.org is in the right spot which appeared to be there by default but im not able to open up and board preference to search for a specific board view. I'm probably confused on how it...06-18-2025, 11:51 PM -
Hello
Got this speaker from a friend , defective. Power led comes on and off , in a loop.
Disassembled, got the board out, and after a bit of measuring I found a low resistance on a 5v6 line. With a bit of current I found a transistor heating up on that line (labeled T1 and 113 as on pic).
After removing this guy, I got a value of 0.7 in diode mode on that 5v6 line, which before had 0.02 or something like that.
I tested powering it up without the IC, and the speaker turns on and stays on, and works fine
Still, I need to replace this transistor.... -
hi people, i need some help to identify a transistor(q14) that is missing on the board, so the gpu has no voltage i think that q14 activate the phases for gpu, but i dont have schematic or boardview, but i think its the same transistor than q15 and q16, thanks... -
Hello everyone,
I guess I need help from the masters to try and find what is frying a 2SC5669 transistor on the left channel of this front center Amp for a NAD T752.
Was working perfectly and all of a sudden I heard a pop, and then a glow from the amp. Not only did the 2SC5669 burn a leg, but R520 which is a 220 ohm resistor partially burned - it now measures 110 ohms.
I bought this amp second hand fairly cheap as it was not working, it went into protection mode. I finally traced it down to the same transistor Q510, the one that just popped. It was shorted...
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