EZ-Flash USA Forum

Hi, i'm looking for help from you here's the thing.
Five years ago the battery of my card has detached from the PCB, i was young so i tried to fix this with the soldering iron of my dad but the tip was very big, for example with this it's impossible to solder CMS component. I succeeded to get back my flash card but as i was young, i wanted to replace the battery as well as before the accident.




Finally as you can see in the pic, I almost burned the PCB, with the soldering iron and by accident i removed one the resistor which was around the battery's connectors.

Today, i'm older and i want to fix the mess i've done because it was really stupid. So i'm asking the help of those who still have an Ez-Flash II, because i'd like to know what's the capacity of the resistor or capacitor (i don't remember well), i removed in order to replace it with a new one. And see if it still works or no.
Here is the back of the card with the release date, if it can help :



I still have the battery, so i only need to replace the missing parts to check if it still work.

Thank you in advance for your help.

EDIT : With the burn parts that i need to change i think

The sticker on the front of yours is different but the model underneath is the same and it is the same size. The top right of your picture is populated in mine (you only have R24) and the chips are different.

Still the resistors on mine are
R6 - 103 aka 10K
R8 - 122 aka 1.2K

C1 - you can not really measure things in circuit (I tried anyway and it failed to do anything although even if it was by itself it would be right on the limit of my meter) and I do not think hot air is on the cards for today. Frankly though 2004 vintage 1.5/1.6mm did not have the largest amount of range (measured with callipers).
Today they seem to range between half a picoFarad and 10 microFarads at way more voltage according to the first datasheet I saw so you are probably covered and I am afraid I am not sure where I would want to look to find vintage stuff so as to give it a good guess (to my shame no books that far back around here).
Ceramic non polar is your choice though and if I had to guess that is not quite a pure noise one and not a crazy big voltage smoothing one but somewhere in between or closer to smoothing than not- borderline microFarad/high hundreds of pico range maybe?.

Thank you so much for your help. I've made some research so can you tell me if those components are fine or wrong ?

R6:
TE CONNECTIVITY 352010KJT - RESISTOR. 1 WATT 10K 5%

R8:
TE CONNECTIVITY 352010KJT - RESISTOR. 1 WATT 2.2K 5%

And for C1, (the component still one the PCB but i'm gonna get a new one in case of)
JOHANSON TECHNOLOGY - 500R07S1R5BV4T CAPACITOR CERAMIC
But i don't know if it's non polar, i need to check that.

Farnell are a great company but I find they do not do so well (along with most other electronics suppliers of a similar calibre*) on low volume shipping- the parts will be cheap but shipping will kill you (I would be surprised if it was under ten Euros and it tends to stay there and any free shipping is when you order some 30 Euros of goods which is easily done on a site like that but not what you want here when you need barely a Euro of parts).

*places like http://fr.mouser.com and http://www.digikey.fr

Anyway the values were right but the sizes looked a bit bit- 1.6mm long or thereabouts was what I was looking at. This would mean 0603 case style if I am not mistaken (I should have put that earlier- my apologies) and I do not know how electronics goes around you but that would be 1608 metric I think (Imperial style for better or worse has stuck around in electronics).
To that end
http://fr.farnell.com/multicomp/mc-0-06 ... dp/9330399 for the 10K
and
http://fr.farnell.com/multicomp/mc-0-06 ... dp/9330500 for the 1.2K

The capacitor (condensateur) was also 1.6 by 0.8 mm aka 0603 again which worked in a search. It is definitely ceramic/non polar- it will have a mark if it is not.

If you have a local electronics or mobile phone repair shop I would have a word with them- 0603 in these values is fairly common and they will probably sell you the parts if you ask (they probably buy whole bags/kits in with such things in). Also unless you have a hot air or infra red soldering station I would not go in for this.

I choosed Farnell because I can get it trough my school they often order over there. At least if I have the reference of these components i can search it somewhere else.

I'm a bit familiar with electronics as i've follow a cursus in that but i'm not an expert
Ok, thank you for the resistors, i'm gonna look at it, but can you tell me which value do you recommend me for the capacitor.

Yeah i should take a look to electronics store, in ebay they sell these parts but i don't know if it's a good idea.

You think it's impossible to solder this CMS parts with a soldering iron and a small nozzle. Because in my school there is some professional machines but i don't know if i'll be allowed to use them.

Thank you again for your help.

If you can tack it onto an order and not have to pay shipping or your school has an agreement with them go right ahead.

Ebay.... I am wary about some of the bigger and better chips and stuff coming out of Hong Kong/China but basics are usually not bad. Much like buying batteries or ink cartridges if you buy the cheapest thing you see you will get the cheapest and nastiest thing out there.

The capacitor... I still have no idea and the searches I made to get a rough idea for the last post did not help matters at all. I tried looking up the chip they are connected to but did not get far and I do not really want to reverse engineer the the rest of the circuit. I still call closer to signal smoothing than simple noise reduction and will stand by my gut call of 500 picoFarads to just below a microFarad from the earlier post and in this case lower is probably worse than too high.

You do not know if your school will allow it- big hint is to speak to the technicians and non academic or staff that handle such things as they will often help out more than your teachers/tutors (it is related to the idea that you should never get on the wrong side of a technician). A cheap and cheerful hot air station costs not a lot more than a decent soldering station ( http://www.amazon.fr/s/ref=nb_sb_noss?_ ... ue&x=0&y=0 ) and is no more dangerous to you or itself so it will probably not be a problem if you ask.

With a soldering iron... a professional solderer/assembler/repairer sure but for things this small (it is small even by surface mount standards) if you have to ask then no. Hot air and IR if you practice a few times on a dead device (the main advice here is do not turn the flow rate up too high) them anybody that can roughly solder can manage it.

One video
http://www.youtube.com/watch?v=5x6ACO7iR0A

Ok first i'm gonna check if they don't have the parts i'm looking for, they have a lot of components.

The solution of Ebay is more for the shipping cost because electronics sellers use a huge box for only two packs of captors for example, that's annoying.

Ok, thank you anyway, first i need to solder the resistor, the capacitor will be necessary after and my apologies if i'm asking you too much.

Thanks for the link, these soldering station are available in my school and i also know that i can use hot air with the help of my past teacher. Can you tell me how do you call the paste used in the video ?

Thank you.

I would probably call it solder paste but I have seen that refer to flux paste (more so in mainland Europe and those coming from it) which you probably want but is not necessary (most solders will include it) and will not allow you to solder. Crème à braser appears to be the translation of choice though.

Ok I will look for that, I will keep you informed. Thanks.