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I do not understand this magic.

Very informative, thanks! I have a 3034A at work with a power supply that failed in an identical manner, but also the unit doesn't properly power on with 12V from a bench power supply. Any suggestions for next troubleshooting steps?

Lineage Power))) ! Lineage 2 Chronicle One)

Hi

Amazing I had the same original idea! Apparently someone thought of it years ago! 😂😂😂 Im a 3rd yr. EE student lol this is so awesome

thanks for the video. Could you suggest me where I can get a schematic for agilent 54855A DSO 6GHZ scope. I accidentally shorted power connector (ATX style) then somehow it is not turning on. Seems like the power supply is OK, it is outputting all the voltages (there is a separate analog voltage generation board and when I disconnect from it and connect the power plug) I can measure all voltages within range on SPS. The front panel buttons are not working, but it power on itself and can boot without that connector plugged in.

Can anyone tell me what the resistance of the resistor at the upper right pin(as seen in the image at 22:12) is? The pin is INPUT2 of the LP339M. It got fried in my Power Supply and I struggle to find the correct value.

Does it work with ios?

"Let's see Paul Allen's Card"

I've worked a lot on the 4000A and could feed 13V directly to the main board connector. Didn't realize, until this video, that the small board creates the other supplies for 3000x series (3000A and 3000T). Thanks.

My MSO3104 fan out because of exactly that reason. Thank you for the helpful guide. On my power supply, R7 (0.11 Ohms 5%) is gone also.

Louis Rossman sent me here. Cheers.

Pretty awesome, I’m gonna look at the more of your web stuff

One detail .The Mosfets and diodes are on a common heatsink and the disassembly show that there is a common mounting point to the case of mosfet with no screws on center tab.I think this was on purpose as potentials are different. I see that screws were added in reassembly .I hope insulators were used.

Hi Friend, its me again. My PSU did not repair. It literally doesn't show the 12 volts. I believe it is definitely irreparable. And I find it difficult to buy quality components in Brazil and the shipping time for good components here is too long. I followed your conversations on the forum and at some point you say that a MeanWell RPSG-160-12 is the best option to replace it, right? Could you tell me if with this replacement source it would be plug and play, or would an adaptation be necessary?

hello friend. I have this same equipment and with a defect identical to this one. So thank you infinitely for this video. Could you help me with a doubt? Could you tell me if the 12 volt power input without PSU is exactly at 10:07 in the video, are they on pin 2 with positive and 5 with negative of the connector? In the video I could not have a clear view of this. I'm sorry if asking seems a little silly.

Cheers mate. You saved us from a 3k repair <3

I found a 100 mm bowl riser on AliExpress that could bolt right to the top of that thing

You are a hero! Our DSO-X3014A from 2014 popped a fuse in our main line the other day and Keysight repair was quoted at 3.100 USD!! I took apart the instrument and sure enough, the PSU had a black spot under it. The Mosfet seemed OK but when disassembling I noticed a small black flake falling out. When examined under the microscope the marking clearly read 3042 :). I think we have the culprit. Changed the cap to be sxtra sure using your thermal insulation method. Scope worked fine on bench supply after beefing up the transient current supply capability with extra capacitors on the 12V. Does anyone know if the 6.0V output is actually needed for the scope?

Super nice video. Is it possible get a copy of the repair manual! Hans in Norway

Hey, is it possible to have the file you used to make these. Great Christmas Gift for my son. Or , I can pay you if you upload for me. Thanks.

I think i hav same issue with mine..which 2 pins you have connected with your bench power supply to check if rest of scope is good?

Thanks for the video... on another note: I don't know any tech's that are not musicians... lol

The resistor immediately under Q1 is also smoked on mine, and I cannot read or measure the correct value. I noticed you soldered a thru-hole version to the underside, but can't make out the colors. It looks like Green-Blue-Black-(Grey?)-(Purple?) which doesn't make much sense. My entire Q1 was shorted across all terminals which would mean mains voltage was fed into the current controller IC as well, likely through this resistor. My trace didn't have any arcing to it, but it probably didn't need it since the gate on Q1 was shorted to source and drain. I checked the data sheet for the current controller and it only spec'd a low value of resistor in one use case, which seemed different from this application. I suppose it doesn't matter all that much, but with the gate capacitance and the switching frequency (500KHz), it can't be too large or it wouldn't work. Any suggestions?

Unbelievably, my DSO-X just fried and I found the PSU has exactly the same damage marks. For those who'd rather just replace the PSU than repair the fried one, has anyone figured out a suitable replacement?

Wrong way , you should use solder paste and heat gun with slow speed air

What's the value of the resistor you replaced ? Can't quite read it on the video and mine is blown too (and marking unreadable ...). The one next to it as well (blue one).

😎 Very cool!

Thank you for sharing the video & the designs

Very good and thorough coverage, electronically sound descriptions. one added thing stick with electronics, not sure the singing career is going to take off :)>. One other note the power supply is rated for 2A max hence 2.? current draw will also cause overheating of the PS.

could you send me 1 of your cards?........and YES on the network thing

i have a Hantek DSO2D10 and i think i put 3000 volts on channel 2 so its not working anymore channel 1 is working what do you think i should look for to repair that channel 2 ? there is a signal on it but not messuring the right values

at first I thought it was a 4cilinder engine

🧐🙂

i think the background music is the best 😜

Hello, you know of someone who can do my design on PCB, I only have one image in PNG but I do not handle the program

Sir digital oscilloscope freezing problems sir

This is the single most useful RUclips video I have ever watched. My MSO 2024A scope just let out a pop and turned off, and I thought I would need to send it in to be repaired and not have it for a month. Not only did this video identify the cause of my scope dying but after watching him run his scope off of his bench power supply - I realized I can do the same with mine and get back to work today. Great job man.

Singing is 10/10

Thank you for the video

So amazing . I have so much more brige and I never remove it ....

Could I purchase one of these from you? I’m running into the EXACT same problem

How did he reattach the solder pads that lifted at 22:22? I suspect he just repositioned the pads and reflowed the solder with flux? If he used some kind of adhesive, what type/brand? Thanks for any advice! Edit: Hilarious singing montage along with great electrical expertise. Made me laugh.

Did you ever get this fixed? I have 2 here with the same problem.

so what happened to those other videos you promised!

Did you ever get to repair the power supply?

Have you seen the visa credit card with a dot matrix and button inputs? Its called CodeSure and it's made by SmartDisplayer. I think it could at least make a calculator, if not a tiny dictionary, depending on how much storage the thing has.

I hate soldering these god damn 0.5mm ffc connectors so much. They really are the worst.

I was impressed by the performance. For this reason, I subscribed wanting to have more!

After the music, I had to sub. Lol Nice vid btw. Cheers!!