| Products > Test Equipment |
| TDS7054 Power Supply (PSU) repair |
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| awjennin:
I found a IDE HDD at the local PC salvage shop and got it. Was hoping for a 7200rpm, but they only had a 5400. oh well. While I was loading Windows (with the top chassis removed, of course...) the keyboard fell in to the unit and damaged the Celeron fan. As I removed the board to inspect and repair, I realized there was another Electrolytic cap next to the fan that was blown up like a balloon. I decided to make a final digikey order replacing the two capacitors on the PC board, as well as the fan. On digikey, I also found a much quieter fan that moved about the same amount of air so that was nice. Installed, and power up test, then loaded and booted into Win2k. Next, I decided to make a little HDD caddy, as my scope came without one. I drew up a quick model and hit print. I have to get my printer printing cleaner, but i will focus on that when winter comes around again. for the time being, this is more than sufficient. Then got her buttoned up with the covers on! If anyone has a spare top-plastic, I would be interested in buying that! or a 500MHz probe or two. I like the modern Tek6139's but am open to other good ones. Now it is time to load software. I have some forums to read through to figure out where and how to get the Tek software & drivers loaded, as well as the ram written to and options loaded. If anyone has specific threads that they've used, please let me know! otherwise i will dig around. BTW if anyone's interested, my HDD caddy file is attached to this post. Because my scope came without the caddy, i didn't have the hot-swap to IDE interface board, so I removed the mating board from within my scope - and now the IDE cable plugs directly from the riser board to the HDD. Not perfect, but saved a lot of time and money trying to locate one! I tolerance it to have a nice firm fit into the scope. TDS7xx4_HDD_CADDY.STL.zip (9.86 kB - downloaded 43 times.) Note: Remove IDE cable from inside scope, and attach it to HDD prior to inserting HDD into scope. Then feed cable through opening in back as you slide in HDD caddy. When complete, reattach host-connector of IDE cable into mating connector on riser card. Thanks again for the help - hope this thread is able to benefit others in a similar spot! |
| charlyd:
Hi i know this topic is aged already but my question is related to this psu. So the best place to ask i would say. halfway "TiN" is talking about planning loads on the output. but i already did that and my psu startsup in the scope but does not when it is placed apart on my bench. with the switch over J1/P1 and P4. do i miss something i have load over J1. P5,6 +12v. --- 18 ohm --- gnd J1. P11,12. +5v --- 18 ohm --- gnd J1. P19. +3,3V --- 18 ohm --- gnd J1 P1 --- switch --- 100ohm ----- gnd my red led lit when switch is open , it goes of when #PS_ON to gnd. but doesn t lit when the switch is toggled to power off again. My T7. J2 supplies are not present +15v -15 v and no + and - 5 volts |
| charlyd:
i am tracing the secundairy side of these famous Martek PS2251 power supply. and i am curious if anybody can add info like drawings / selfmade diagrams / hand made schematics from the T7 sec. T10 sec. i am missing some voltages like. +5v -5v +15v and -15v located on J2. and my +12V on J1 is +5.94V so tips are welcome. |
| charlyd:
Hello i have this question is it possible to remove fuses for particulair. circuit. to build up the secundairy side part by part. now my psu is getting in protection every second or so. so can i remove F50 F51 F52 . so the psu starts in a "small" version. first the basics primairy and the needed secundairy part.... is that T10 ? |
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