Informative and educational video! Yes, an analogy of a heat sink on a component is like a cooling fan. A characteristic of a component will be affected and malfunction, then eventually breaks down. 👍
Super job on the scope TG. You're absolutely right on that fan being needed on the main board when it's vertical like that. The first one I worked on years ago I didn't know about the fan, the scope and on screen text started acting funny with weird text displays. Fortunately while doing my research on calibrating this scope I ran across someone who said something about the fan. Once I put the fan on the main board all the text problems when away and I was able to proceed with the calibration process. I wasn't able to fix the RAM problem on the scope because we didn't have the right equipment or I didn't understand how to inject the right signals, so it sits on the shelf with the TEST 04 FAIL 11, RAM Cal Constants LOST. Thanks for sharing.PS If you get a chance in your videos try to put some insets of schematic shots, it's easier to understand what you're talking about. Love your channel bud, keep up the great videos. Best Wishes & Blessings. Keith Noneya
I likely do that and may wait to do the repair on video instead, this one was for a friend and just wanted it working as he was about to waste $125 to get a not needed part, so wasn't planned.
My 2465 had a memory 05 error intermittently in 2005. I recapped the supply and replaced the fan with a muffin fan similar to the video. The scope has been working great for 15 years and still going strong. The original fan is temperature controlled so putting in the muffin fan may mean it can't pass calibration, but since i don't do work for NASA it won't matter.
Hi, great video, thank you. Have you any idea where to get new or replacement Polycarbonate shafts for the var controls, I suppose I may end up having to fabricate one as I've searched everywhere but cannot find this part available anywhere, my scope is a 2445A and apart from that functions perfectly but then it is a Tektronix!
Hi Sir I get 2465B from my dear friend ho died from cancer few month before... i have problem with oscilloscope and for legacy and memory i wont repair.. can you help me to fine manual and anther stuff... best regards..
I had to drill 2 small holes to mount the fan. You could also just use silicone, if you don't want to make the holes. You do still need to make a hole for the cable from power supply to the regulator. Fan used is a Delta AFB0612HC. I also recommend using a 15 ohm 1w resistor in series, it cut the noise down and extend fan life, or go with a LM317, or NTC temperature sensor. The guy that own the scope wanted fan to run at a constant speed as what he was going to do this himself, so just did it for him. At first he wanted it at 100% as he don't mind the noise, since scope he using for work, but convince him to drop it to around 85% as fan will last much longer. Here video showing fan used and mod completed. ua-cam.com/video/qJE7uVlBjKg/v-deo.html
Informative and educational video! Yes, an analogy of a heat sink on a component is like a cooling fan. A characteristic of a component will be affected and malfunction, then eventually breaks down. 👍
Super job on the scope TG. You're absolutely right on that fan being needed on the main board when it's vertical like that. The first one I worked on years ago I didn't know about the fan, the scope and on screen text started acting funny with weird text displays. Fortunately while doing my research on calibrating this scope I ran across someone who said something about the fan. Once I put the fan on the main board all the text problems when away and I was able to proceed with the calibration process. I wasn't able to fix the RAM problem on the scope because we didn't have the right equipment or I didn't understand how to inject the right signals, so it sits on the shelf with the TEST 04 FAIL 11, RAM Cal Constants LOST. Thanks for sharing.PS If you get a chance in your videos try to put some insets of schematic shots, it's easier to understand what you're talking about. Love your channel bud, keep up the great videos. Best Wishes & Blessings. Keith Noneya
I likely do that and may wait to do the repair on video instead, this one was for a friend and just wanted it working as he was about to waste $125 to get a not needed part, so wasn't planned.
My 2465 had a memory 05 error intermittently in 2005. I recapped the supply and replaced the fan with a muffin fan similar to the video. The scope has been working great for 15 years and still going strong. The original fan is temperature controlled so putting in the muffin fan may mean it can't pass calibration, but since i don't do work for NASA it won't matter.
Hi, great video, thank you. Have you any idea where to get new or replacement Polycarbonate shafts for the var controls, I suppose I may end up having to fabricate one as I've searched everywhere but cannot find this part available anywhere, my scope is a 2445A and apart from that functions perfectly but then it is a Tektronix!
Hiflow Fan replacement for tektronics 2465b 2467n
Sunon
ME80201V1 60m3/h
PMD1208PKB1-A 90m3/h
80x80x20mm
Hi Sir I get 2465B from my dear friend ho died from cancer few month before... i have problem with oscilloscope and for legacy and memory i wont repair.. can you help me to fine manual and anther stuff... best regards..
Can you tell me the fan model?did you have to drill holes for the new fan..Thanks happy new year
I had to drill 2 small holes to mount the fan. You could also just use silicone, if you don't want to make the holes. You do still need to make a hole for the cable from power supply to the regulator. Fan used is a Delta AFB0612HC. I also recommend using a 15 ohm 1w resistor in series, it cut the noise down and extend fan life, or go with a LM317, or NTC temperature sensor. The guy that own the scope wanted fan to run at a constant speed as what he was going to do this himself, so just did it for him. At first he wanted it at 100% as he don't mind the noise, since scope he using for work, but convince him to drop it to around 85% as fan will last much longer.
Here video showing fan used and mod completed.
ua-cam.com/video/qJE7uVlBjKg/v-deo.html