This came off while desoldering, my mistake 
How can I fix this?? I tried putting it back on and soldering but it was too damaged
How can I fix this?? I tried putting it back on and soldering but it was too damaged
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Re: What to do about missing pad on lead?
What is the component - doesnt look like the pad was connected - may just be a blank pin- did you take any pictures before you started.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: What to do about missing pad on lead?
Zoom out slightly so we can see where the trace is going. Also show the topside so we have an idea.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
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Re: What to do about missing pad on lead?
What board is this?--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
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Re: What to do about missing pad on lead?
I cant see a trace from where the pad was - that is why I thought it was just a blank pad - unless there is a trace on the otherside or it is a multilevel board.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: What to do about missing pad on lead?
If this is a 2 layer board the trace will be on the other side just solder the component from the top and you'll be fine.
If it's a multilayer board and there is no trace on the top you're out of luck.Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: What to do about missing pad on lead?
I'd be willing to guess that this is OK, and this pin doesn't go anywhere on the other side (if this was a through-plated via hole) ... that is, if this is even more than single sided as most PSUs are 1-layer... Is there a wire connected on the other side of the board on that hole?
You might lose a bit of durability as even if it wasn't connected to anything, it does hold the part on the board... but you probably could have told that the others do much more than enough to make sure the transformer doesn't fall off
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Re: What to do about missing pad on lead?
It's a PowerMan PSU, here are the pics! Yeah it doesn't look like it goes anywhere but I want to make sure!!! Looking at the second picture it is the 3rd pin from the leftAttached FilesComment
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Re: What to do about missing pad on lead?
How you doing with the 740NPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: What to do about missing pad on lead?
More than likely there because the winding core had it already or for ease of alignment during manufacture.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: What to do about missing pad on lead?
Awesome....Thanks for the replies I'll test it on Monday!
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Re: What to do about missing pad on lead?
Hmmm, the power supply didn't turn on at allComment
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Re: What to do about missing pad on lead?
Yes, well you will need to tell us what you were doing to it and why.
Bigger pictures of the whole thing not just parts. What was it connected to?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: What to do about missing pad on lead?
Was it working before you upgraded the transformer?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: What to do about missing pad on lead?
maybe the transformer is wired differently ?Comment
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Re: What to do about missing pad on lead?
Yeah it was working, and it's getting 5VSB but that's itComment
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Re: What to do about missing pad on lead?
Hmm...transformer "upgrades" are tricky, most of the time you can't swap transformers from one to another unless you carefully check the pinouts of the transformers... where did the new transformer come from? Was it intended for this particular PSU?Comment
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Board had no history of liquid; unsure of drop history, but no signs of damage of any kind worth noting.
Charger sitting at 5v/0a. PPBUS is at 1.9v-0.9v steady cycle (peaks, drains, loops). Confirmed CHGR_EN_MVR is missing, but DCIN was reaching ISL just fine, so replaced ISL--no change at all. Confirmed pp3v8_aon is also missing--and being unsure *exactly* which signal appears first (or if they are simultaneous), I inspected PMU/U8100 area and found no shorts, but also found PP3V8_AON_MPMU_ISNS_VIN missing (not shorted). Replaced U8100 just in case (have had them fail in weird ways),... -
Hi everyone,
I recently acquired this card from a seller who was selling a PowerMac G5 for parts. He mentioned that the video card was probably broken too.
Upon closer inspection, I can tell the reason why it won't work: it's missing a bunch of CAPS! (it's also missing an inductor - 1.0uH).
It's a nice card as it's one of the few AGP cards that will support 2560 x 1600 resolution on a PowerMac G5 using a 30" Cinema Display.
Looking at the card, it appears to be missing the following:
1x 1.0uH inductor - orange square
2x... -
I bought one of these as it was the only one I could find that is compact enough to fit in my toolbox (though I've since found KSGER make a substantially safer looking one). It's one of those fan-in-handle things that has the 230V element in the handle. Quecoo briefly sold a similar unit but discontinued it.. maybe they couldn't find solutions to these problems. I'm aware these fan-in-handle things are garbage compared to a good air pump station but I only really use this for occasional QFN work etc.
I did not realise at the time of buying that its design is... interesting, to say... -
Hey guys.
Need help with this one.
Fan not spinning due to missing PWN Fan signal.
Also 5 seconds from powering up it freezes, unless in BIOS.
But as soon as Windows starts to load, it will freeze.
CPU is COLD / Room temp when it freezes.
I've replaced the CPU, same problem.
Replaced SIO/KBC IT8987e and reprogrammed - same problem.
Replaced fan - same problem.
Replaced flex cable from board to daughterboard (which has fan connector on it) - same problem.
Checked the Thermal sensors around CPU and Board to the SIO/KBC and...08-19-2024, 05:22 PM -
Hello. I would need some advice please.
My son's MBP suddenly stopped working and is now only getting the green-then-orange light on Magsafe and no fan spin.
He brought the MBP into the house (22 deg C) from a very cold conservatory (-3 deg C) and turned it on straight away. The Mac suddenly died a few minutes later.
I examined the logic board and couldn't find any signs of water damage, corrosion, blown up components etc. Nothing was ever spilt on it, and the logic board looks immaculate.
I have already replaced the logic board with another...
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