Help Identify this Mystery Component... - Page 1
Forum section: electronics / repair

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 05:04:09 am
content: We are trying to identify a fried component on a system board for our Objet Eden 250 3D printer. Can anyone tell me what the component might be? It looks like there's some similar components on other areas of the board, but I have no way of knowing if this one is the same.Here's a similar board on eBay for reference:Also, what's the best way for us to clean up said board prior to soldering on the replacement component?Thanks in advance for the assistance!

author: Cyberdragon
author_rank: Super Contributor
timestamp: January 04, 2018, 05:23:10 am
content: Probably a tantalum capacitor as a filter for that switching regulator. Unfortunatly, it has exploded, erasing its value, you'll need a schematic to find what it was. Also, are those LEDs still on?! You should always remove power if a component explodes to prevent further damage.Rubbing alcohol should get it of the soot, hopefully the board itself isn't burnt.

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 05:25:24 am
content: Quote from: Cyberdragon on January 04, 2018, 05:23:10 amThe reason that the LEDs are still on is that we still actively use this printer... Oddly enough it seems to work ok without that component! That said, we'd like to fix it ASAP.

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 05:42:35 am
content: Quote from: Cyberdragon on January 04, 2018, 05:23:10 amI've posted another picture of a board being sold on eBay... Does that help at all?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 05:44:37 am
content: Quote from: blueskull on January 04, 2018, 05:38:21 amI've posted another picture of a board being sold on eBay... Does that help at all?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 05:47:52 am
content: Quote from: blueskull on January 04, 2018, 05:44:47 amAny idea what the value might be?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 06:32:12 am
content: Quote from: blueskull on January 04, 2018, 05:53:49 amWhat are the potential risks associated with choosing the wrong capacitance?

author: amyk
author_rank: Super Contributor
timestamp: January 04, 2018, 06:38:04 am
content: Ask the eBay seller for a closer picture of that area, "for confirmation before buying"

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 06:38:50 am
content: Quote from: blueskull on January 04, 2018, 06:36:18 amAny drawbacks to using an aluminum cap? Would I be able to find one in the same form-factor?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 06:41:50 am
content: Quote from: amyk on January 04, 2018, 06:38:04 amAlready did ask the 2 sellers who currently have one posted... Crossing my fingers!

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 08:56:41 am
content: Quote from: Cyberdragon on January 04, 2018, 05:23:10 amQuote from: blueskull on January 04, 2018, 06:53:00 amQuote from: amyk on January 04, 2018, 06:38:04 amOk, check this out! Got a picture from one of the eBay sellers. I think these are the markings:R+68625k534What do you make of it?Any idea why our machine could be still operating with it fried?Is there a more robust component to safely replace it with that will be less likely to fry again?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 09:06:24 am
content: Quote from: blueskull on January 04, 2018, 09:04:42 amLooks like it's a KEMET branded component.Here's the KEMET PDF:https://content.kemet.com/datasheets/KEM_T2009_T495.pdf.I'm not sure what might be a more robust option to replace the existing component with. Any ideas?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 09:21:06 am
content: Quote from: blueskull on January 04, 2018, 09:15:20 amHere's the KEMET PDF:https://content.kemet.com/datasheets/KEM_T2009_T495.pdf.I'm not sure what might be a more robust option to replace the existing component with. Is it safe to replace it with a more robust leaded aluminum cap? For example, I'm really not familiar with component form-factors, so I have no idea what might even physically fit. I guess I should probably choose a component with a higher voltage rating, correct?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 09:28:27 am
content: Quote from: blueskull on January 04, 2018, 09:20:22 amSo, would the T495X686K025ATE125 be safer, as it has a higher Max Inrush Ripple Current (1149 vs 908 @25c and 1034 vs 817 @85c)? Is there anything else to consider? Or should I switch to a Leaded Aluminum cap? Or try to move up to 35v cap?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 09:30:33 am
content: Quote from: blueskull on January 04, 2018, 09:27:05 amIt's worth noting that the power supply powering this costs ~$13k to replace... So I definitely want to avoid that drama.

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 09:34:43 am
content: Quote from: blueskull on January 04, 2018, 09:27:05 amAlso, how did you determine that this was the T495X686K025ATE200 versus the T495D686025AE200, T495X686K025ATE125, T495X686K025ATE130, and T495X686K025ATE150?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 09:52:05 am
content: Quote from: blueskull on January 04, 2018, 09:43:44 amGot it. That makes sense. Thank you for all the help!!!Also, is there anything I should check to make sure there's not something else causing this that will make it fry again? Or do I just need to slap it in there and see how it does?

author: MedSpark
author_rank: Contributor
timestamp: January 04, 2018, 10:11:30 am
content: Quote from: blueskull on January 04, 2018, 09:54:29 amThanks again! You were extremely helpful!!! I'm buying the T495X686K025ATE200 and I'll let you know if there's any fireworks. Ha