thank you very much! usually i recieve units like this with NAND firmware problem (can be solved by reflashing the nand memory + spi flash loader) , but that one was really unusual.
@@fixthetempo7276 I also trying to repair a Agilent 7000A series scope. Can you give me an advice on that? Esspecially regarding boot (loop) problem and nand flash?
@@cnst6695 Hi! Unfortunately i dont have such expirience on 7000 series like i have on 2000/3000/4000. But if you have a boot loop problem i think there is a 2 ways to fix it. 1st is to transfer nand memory + fpga memory from burned motherboard ( i mean that this board can be turned on , but there is a defective channel(s) you cant fix) to the boot loop board, as i did in this video. And the second is to reflash the nand memory chip with programmer, but it might be useless if firmware installed in the chip dont match with fpga configuration version. It seems to me that i have 6000 or 7000 defective motherboard in my junk stuff, i will explore it as soon as possible and comment the results here. Good luck with the repair!
@@cnst6695 yep , this is your only chances to fix it. Programmed boot flash on 7000A/B scopes is SPANSION S29GL128P10TFI01. You need a dump to flash it in the new IC with programmer or you need a good working FLASH + FPGA from another board.
@@fixthetempo7276 Thanks for your fast answer and your great help so far! Yes, I found the SPANSION Chip in my device. To flash a new IC with a programmer is also what I've read about. The big problem is to get a dump ;-) To get the IC and a programmer wouldn't be a problem at all. Maybe you can contact me via cnst "at" quantentunnel.de
Nice re balling those manually. I thought I was crazy when took hours to do one on a phone as no template available to recover data off of it and had to transfer over to different board. It took me a few hours, I use to repair game consoles and laptop boards when it was still profitable and pain in butt. I do recommend using a bottom pre heater as board could have warp otherwise as I screw up a couple of boards that way. Still nice job and works. Love that scope as bought the 350mhz version recently.
@@fixthetempo7276 All HP, Agilent, Keysight or whatever you want to call them are a complete piece of shit. I see Us$100k Agilent scope with problems, I am in electronics for more than 40 years, I can say "if you don't want any problem stay away from HP products" Cheers.
at 4:30 on the defective board did you actually check the serial debug port log to see what errors appear in there? I mean were you really sure the FPGA was bad? how? your board seem to stop booting at a very very early stage, at that point I dont think FPGA has anything to do yet. it may have been the boot loader was corrupted or just the classic NAND corruption and both can be fixed without de soldering o many BGA chips....
nice job but I highly doubt the FPGA was bad at all and even the NAND. It might have been corrupted which is easy to fix. The SPI flash could also be programmed in-circuit although I dont think it was bad either. You should have looked at the serial debug port first to see what th e problem is. But in the end it worked out :-) your skill with the BGA was nice
nono my friend . it is all about the experience . i had to repair 150+ of this units. And some of them, approx 1 of 10 had problems with FPGA chip. thats is why i made rhis video
Great job, even though I doubt that all 3 chips could be bad simultaneusly...a better fault analysis might have spared you a lot of dangerous soldering job. Anyway, you have managed pretty well the risk. Regards from Italy.
Nice job!! I can't understand, my bad, what you say about the liquid in the syringe, "metal ..." Isn,t it fluxant? When you prepare the BGA balls seems that each ball stop and stay exactly on the right point. Which is the "glue" used to keep the ball attached? Thanks
The "glue" is flux paste . You need to apply it very thin layer on the BGA chip. In this way you can easily move the balls on the BGA chip any way you need and them simply solder them to the chip. I use Flux plus 6-412-a paste.
That's some ghetto soldering! Congrtz on your success! I agree with the previous comments on what FPGA chip is most probably didn't need to be replaced.
Looking at the mainboard marked as BAD, there is an 8-pin SOIC chip just below, and a bit left, the big 20-pin white socket. The chip's silkscreen is U3602. What chip is this? I'd like to know its code, if someone has a mainboard in hands and can read it. Thanks
@@fixthetempo7276 I have to decide if to buy or not a non-working Keysight 3024 unit. Not much information about it. It doesn't power up and the chip we talked about before had flamed for sure. I have good fixing skill but no experience with Keysight nor any Keysight spare parts available on my desk. From your video I think that the chip is involved in digital supply stabilization because is near to a linear regulator but without the part-code I can't say that for sure. Based on chip-code I'll try to understand what caused the problem and if the source of the fail had passed through the front-end or not. Difficult analyses in any case because I have not the damaged scope in my hands.
It's the corrupted NAND issue, and it can be fixed in-place by re-flashing the NAND chip, no need to desolder anything.
i know that it also can be fixed using the patched firmware using USB TTL and Tera term utility.
Congratulations with the repair!
thank you very much! usually i recieve units like this with NAND firmware problem (can be solved by reflashing the nand memory + spi flash loader) , but that one was really unusual.
@@fixthetempo7276 I also trying to repair a Agilent 7000A series scope. Can you give me an advice on that? Esspecially regarding boot (loop) problem and nand flash?
@@cnst6695 Hi! Unfortunately i dont have such expirience on 7000 series like i have on 2000/3000/4000. But if you have a boot loop problem i think there is a 2 ways to fix it. 1st is to transfer nand memory + fpga memory from burned motherboard ( i mean that this board can be turned on , but there is a defective channel(s) you cant fix) to the boot loop board, as i did in this video. And the second is to reflash the nand memory chip with programmer, but it might be useless if firmware installed in the chip dont match with fpga configuration version.
It seems to me that i have 6000 or 7000 defective motherboard in my junk stuff, i will explore it as soon as possible and comment the results here. Good luck with the repair!
@@cnst6695 yep , this is your only chances to fix it.
Programmed boot flash on 7000A/B scopes is SPANSION S29GL128P10TFI01.
You need a dump to flash it in the new IC with programmer or you need a good working FLASH + FPGA from another board.
@@fixthetempo7276 Thanks for your fast answer and your great help so far! Yes, I found the SPANSION Chip in my device. To flash a new IC with a programmer is also what I've read about. The big problem is to get a dump ;-)
To get the IC and a programmer wouldn't be a problem at all. Maybe you can contact me via cnst "at" quantentunnel.de
Well done! You have much patience re-balling that BGA chip by hand. You are very determined.
Nice re balling those manually. I thought I was crazy when took hours to do one on a phone as no template available to recover data off of it and had to transfer over to different board. It took me a few hours, I use to repair game consoles and laptop boards when it was still profitable and pain in butt. I do recommend using a bottom pre heater as board could have warp otherwise as I screw up a couple of boards that way. Still nice job and works. Love that scope as bought the 350mhz version recently.
thank you very much! i hope i will shoot new video with nand repair 300x\200x scopes in next 2-3 weeks , so stay tuned!
Awesome. I really like the 3000x series, great scopes
yep, very nice scopes!
@@fixthetempo7276 All HP, Agilent, Keysight or whatever you want to call them are a complete piece of shit.
I see Us$100k Agilent scope with problems, I am in electronics for more than 40 years, I can say "if you don't want any problem stay away from HP products"
Cheers.
Amazing!
at 4:30 on the defective board did you actually check the serial debug port log to see what errors appear in there? I mean were you really sure the FPGA was bad? how? your board seem to stop booting at a very very early stage, at that point I dont think FPGA has anything to do yet. it may have been the boot loader was corrupted or just the classic NAND corruption and both can be fixed without de soldering o many BGA chips....
nice job but I highly doubt the FPGA was bad at all and even the NAND. It might have been corrupted which is easy to fix. The SPI flash could also be programmed in-circuit although I dont think it was bad either. You should have looked at the serial debug port first to see what th e problem is. But in the end it worked out :-) your skill with the BGA was nice
nono my friend . it is all about the experience . i had to repair 150+ of this units. And some of them, approx 1 of 10 had problems with FPGA chip. thats is why i made rhis video
Great job, even though I doubt that all 3 chips could be bad simultaneusly...a better fault analysis might have spared you a lot of dangerous soldering job. Anyway, you have managed pretty well the risk. Regards from Italy.
Very Good Job 👍😎
You were right. You were elbow deep in those chips.... You have the gift! 🛐
I am so proud to you, that you speak my hearts language
Nice job!!
I can't understand, my bad, what you say about the liquid in the syringe, "metal ..." Isn,t it fluxant?
When you prepare the BGA balls seems that each ball stop and stay exactly on the right point. Which is the "glue" used to keep the ball attached?
Thanks
The "glue" is flux paste . You need to apply it very thin layer on the BGA chip. In this way you can easily move the balls on the BGA chip any way you need and them simply solder them to the chip. I use Flux plus 6-412-a paste.
@@fixthetempo7276 Thanks a lot
Thank you for the video, nice job.
Where did you get the donor board?
i am working for the keysight in russia , so it is not a problem . i performed that just as of my interest . sorry for the late answer
That's some ghetto soldering! Congrtz on your success! I agree with the previous comments on what FPGA chip is most probably didn't need to be replaced.
Great job. Thanks
Hello.
Can you have my oscilloscope repaired?
His motherboard does not work.
Oscilloscope DSOX2002A
Hi! Yes , i think i can. А где вы приобретали сей осциллограф?
Можем по почте связаться. vlad@tegas.lt
или по whatsapp +37061655986
Nice, Job well done!
Looking at the mainboard marked as BAD, there is an 8-pin SOIC chip just below, and a bit left, the big 20-pin white socket. The chip's silkscreen is U3602.
What chip is this? I'd like to know its code, if someone has a mainboard in hands and can read it.
Thanks
I'll look it tomorrow. Please, write something here tomorrow , it will be some kind of reminder for me.
@@fixthetempo7276 Ok, I'll write a reminder tomorrow at about this time. Thanks
@@action0x01 are u trying to fix the agilent/keysight oscilloscope ? What model? What kind of problem the instrument has?
@@fixthetempo7276 I have to decide if to buy or not a non-working Keysight 3024 unit.
Not much information about it. It doesn't power up and the chip we talked about before had flamed for sure.
I have good fixing skill but no experience with Keysight nor any Keysight spare parts available on my desk.
From your video I think that the chip is involved in digital supply stabilization because is near to a linear regulator but without the part-code I can't say that for sure. Based on chip-code I'll try to understand what caused the problem and if the source of the fail had passed through the front-end or not. Difficult analyses in any case because I have not the damaged scope in my hands.
@@fixthetempo7276 I'm the reminder for the U3602 identification :)
Nice
I have another way to re ball bga chips without balls and very fast and easy