geforce mx440 HELP!!!!!!! missing something??

[daRk_Kon]

http://img411.*************/my.php?i...ture006sd1.jpg

shot of a geforce 4 mx440 backside


the things in red are what broke off, anywhere i can buy transistors or w/e those things are and replace them back on? or is that too intricate work to be d one?

[Per Hansson]

Re: geforce mx440 HELP!!!!!!! missing something??

C=Capacitor and R=Resistor

You will need to know the values of the old parts too though

And the solder pads looks damaged

[willawake]

Re: geforce mx440 HELP!!!!!!! missing something??

i guess thats from that lot of cards. it does look like 1 or 2 have ripped the pads off.

what you should do is assess the damages to the whole lot of cards, basically deciding what can be repaired reasonably easy and what willl be difficult or impossible. then you can use some cards as donors for components.

it would be possible to add smt caps or resistors like the ones broken off using hand soldering. it will be a little fiddly but not impossible. however if the solder pads are ripped off then might be impossible.

[daRk_Kon]

Re: geforce mx440 HELP!!!!!!! missing something??

how would i go about removing and soldering such tiny components? would i still be able to use .8mm 60/40?

[daRk_Kon]

Re: geforce mx440 HELP!!!!!!! missing something??

also, would a 1.6mm chisel soldering tip work?

[willawake]

Re: geforce mx440 HELP!!!!!!! missing something??

i think you would be ok with that. be careful of too much heating of ceramic caps though, they dont like that.

[daRk_Kon]

Re: geforce mx440 HELP!!!!!!! missing something??

you think 300c would get the job done?

[daRk_Kon]

Re: geforce mx440 HELP!!!!!!! missing something??

btw, how in the world do i tell how many pF and volts these SMCs are?

[Logistics]

Re: geforce mx440 HELP!!!!!!! missing something??

You don't.

[pentium]

Re: geforce mx440 HELP!!!!!!! missing something??

When it comes to holding stuff like that in place I put a tiny (VERY TINY) amount of super glue on the end of a pin and hold the tip to the part until the super glue sets.
Then you can hold the part in place while it is soldered back.
After that you just twist the pin and the pin breaks free from the now reconnected part. Get an iron with a very good tip. If not, get a replacement tip for your iron and grind it down until it is a very pointy tip.

[daRk_Kon]

Re: geforce mx440 HELP!!!!!!! missing something??

You don't.

um... is that some sort of a sick joke? lol.....


there are tons of surface mount capacitors... what the hell do i put in this board!!! ahhh....!!!!!!!!!! i dont no what to do :\

[willawake]

Re: geforce mx440 HELP!!!!!!! missing something??

you can measure capacitance with the right equipment but voltage no. it is necessary to assume the max voltage in the circuit. really the best way is to use a donor card for the components using something about the same size.

[daRk_Kon]

Re: geforce mx440 HELP!!!!!!! missing something??

what equipment do i need to measure capacitance with?