[newb] Need some advice on difficulty of this repair

[mariushm]

Re: [newb] Need some advice on difficulty of this repair

It's not looking good.

Use the solder sucker on the leads to remove the solder, cut the leads so that when you bend them, they bend over the pcb just like the other leads around the board.
When you bend the leads, the capacitor should also stay in place if they don't you can always get a towel or some other material and put it under the board to exert some pressure on the capacitor and keep it in place.

Make sure the iron is hot enough, then put the solder iron on the round copper pad and make sure it touches both the copper pad and the capacitor lead and put the solder wire between the solder iron tip and the copper tab. When both the wire and the copper tab is hot enough, the solder wire will melt and flow down on the hole.
You have enough solder when it covers the surface but you still see the lead a bit.

This whole process shouldn't take more than 5-8 seconds if your iron tip is hot enough.

If you've damaged that copper ring around the holes, you can carefully scrape (with a razor blade for example) a bit of that green "paint" around the hole to expose the copper under the insulation layer and solder the capacitor leads to that copper.

[selldoor]

Re: [newb] Need some advice on difficulty of this repair

Practice is the way to go - if you dont have spare boards to play on get a
can - tinned steel -not aluminium make some small holes in it max 1mm and then play on it -try and solder over the holes get some wire and solder it
through the holes as if it was a board. Looks to me that you were trying to cover the pins with solder rather than trying to solder the pins to the board.
Good look.

EDIT hahahah meant to say Good Luck oh:

[mariushm]

Re: [newb] Need some advice on difficulty of this repair

Also, please watch these two vides (and if you have time the other parts in the series):

They explain very well how to solder and show the proper technique:

Part 1. Solder and flux : https://www.youtube.com/watch?v=vIT4...6EC0F1F93C1837

Part 6: Component Soldering : https://www.youtube.com/watch?v=AY5M...3C1837&index=6

imho you can ignore the part about cleaning the leads with abrasive material and preparing the leads by cleaning them with isopropyl alcohol, those are only needed if you have old components or you're paranoid. But watch the technique and how he holds the iron and how he adds solder. It's important to do it as close as possible like that if you want quality soldering.

[SteveNielsen]

Re: [newb] Need some advice on difficulty of this repair

I agree that 400c is too high for that board but that 250c will be too low, there are some wide traces. I'd try setting it around 300c, maybe a little higher, to help compensate for the heat dissipating into the traces too fast.

If the long leads aren't shorting to anything it won't be an electrical problem but it looks crappy and it's not fun getting poked in the finger with them. Snip them off when you're done.

[Agent24]

Re: [newb] Need some advice on difficulty of this repair

I run mine at 375°C most of the time without issue, sometimes 400°C or more if there is larger mass (but not often) - admittedly I have never checked or calibrated mine but it works on those settings (Jaycar's Duratech Hakko 936 clone)

I think it's more like you are taking too long or you are putting the solder on the tip before you put the tip on the board, or some other incorrect way, or the flux is just rubbish.

The 2nd video mariushm posted is very good. Although I personally do not bend the leads that much (or at all) - it just makes it much more annoying to desolder anything afterwards if needed.

[stj]

Re: [newb] Need some advice on difficulty of this repair

i dont bend leads, just hold the part in place before soldering with tape or a rolled up tissue pressed against it.

it's a lot simpler to trim the wires that way.

[SteveNielsen]

Re: [newb] Need some advice on difficulty of this repair

I run mine at 365c mostly for board work. I go up and down as needed for the task.

That sounds like a smart idea stj. I do bend part leads a tad if room allows but only enough to barely hold the part in. If it's real tight quarters around the pad I'll not bend it at all and hold it in some other way, usually resulting in hot finger tips.

[stj]

Re: [newb] Need some advice on difficulty of this repair

burned fingers is why you use the tissue.

[SteveNielsen]

Re: [newb] Need some advice on difficulty of this repair

My fingertips hear you loud and clear buddy!

[Agent24]

Re: [newb] Need some advice on difficulty of this repair

If I'm building something I try to install components from shortest to tallest that way the bench holds them in place

Otherwise, finger or tape.

Usually leave the leads straight, and cut them off before soldering. Less metal to heat up and you cover the cut end of the lead with solder so it's less likely to corrode later.

[akuthia]

Re: [newb] Need some advice on difficulty of this repair

Well, Bad caps, I greatly appreciate all of your help. In the end, I was both a success, and a failure. All in one fell swoop.

https://drive.google.com/file/d/0B15...it?usp=sharing

I suspect that the damage was done in my struggles to get the frame off, and so really, the entire exercise was likely futile, and yet wasn't.

[stj]

Re: [newb] Need some advice on difficulty of this repair

fuck!
is that at the top a reflection, or a big crack?

[akuthia]

Re: [newb] Need some advice on difficulty of this repair

fuck!
is that at the top a reflection, or a big crack?

it is not a reflection. It LOOKED to be the only part of the windows screen showing through

[selldoor]

Re: [newb] Need some advice on difficulty of this repair

Bad news - ended up bad luck and bad look !

If you decide to fix and troubleshoot anything else can you post your pictures
using manage attachments - they need to be jpg less then 3mb.
Idea is that they will remain to help others in future.
Try reading the thread without the pictures ( they will surely disappear)
and see if it makes any sense without them.

[akuthia]

Re: [newb] Need some advice on difficulty of this repair

Bad news - ended up bad luck and bad look !

If you decide to fix and troubleshoot anything else can you post your pictures
using manage attachments - they need to be jpg less then 3mb.
Idea is that they will remain to help others in future.
Try reading the thread without the pictures ( they will surely disappear)
and see if it makes any sense without them.

I'm going to re-upload them, I was just in a hurry, and it's a multi step process through drive to get them here, since it doesn't recognize a share link as valid.

[akuthia]

Re: [newb] Need some advice on difficulty of this repair

So this is probably a crazy idea but I wanna look into seeing if I can go ahead and replace the screen but I'm having difficulty finding a source for full size screen replacements. Plenty of laptop screens, but nothing for desktop screens anyone have any suggestions?

[selldoor]

Re: [newb] Need some advice on difficulty of this repair

Totally crazy - first you should try and get some sort of picture on you existing panel as
you dont know yet if the board is fixed?
Next you need to get ALL the information off the label that should be affixed to the back of your panel. Then go hunting for it - it has to have EXACTLY the same details as on your label a couple of letters can make it unusable.
Then you will find you can probably find a much newer better cheap second hand
monitor for less. You may be lucky ( not so far) and find someone selling one with a dead board and good screen but unless you know your boards are working ??????

[akuthia]

Re: [newb] Need some advice on difficulty of this repair

Totally crazy - first you should try and get some sort of picture on you existing panel as
you dont know yet if the board is fixed?
Next you need to get ALL the information off the label that should be affixed to the back of your panel. Then go hunting for it - it has to have EXACTLY the same details as on your label a couple of letters can make it unusable.
Then you will find you can probably find a much newer better cheap second hand
monitor for less. You may be lucky ( not so far) and find someone selling one with a dead board and good screen but unless you know your boards are working ??????

PSU fix definitely seems to be working. While you can't really tell in that picture, that corner did look like my windows desktop, and it powered right up, so I definitely don't think it's a board issue at the moment, and I suspected from when i actually tore it apart something like this MIGHT'VE happened.

[selldoor]

Re: [newb] Need some advice on difficulty of this repair

PSU fix definitely seems to be working. While you can't really tell in that picture, that corner did look like my windows desktop, and it powered right up, so I definitely don't think it's a board issue at the moment, and I suspected from when i actually tore it apart something like this MIGHT'VE happened.

Ok well if your happy you need to get the panel info and get searching.
remember you need a panel with the same number. It is conceivable that
if you buy a set with a faulty board it could have a different panel

[dellxps15]

Re: [newb] Need some advice on difficulty of this repair

Ok, so The board is almost done, here's my work so far (forgot i had one more large cap to do, not going to do the small one, since I don't know what the substance is on it that's covering it)

https://drive.google.com/file/d/0B15...it?usp=sharing
https://drive.google.com/file/d/0B15...it?usp=sharing

My only concern, at the moment is that I'm not able to snip them very close to the board. Hopefully it won't be an issue.

u have to put thin not on the solder irop tip, but on the wire of capacitor. these are cold joint.

just heat the capacitor wire with solder iron, and then touch with thin the wire (not the solder iron directly)

how many inch is the screen ?