Support and General Use > Hardware
iRiver iHP-120/140 USB charge with BQ24022
Davide-NYC:
bluebrother: the link you posted didn't work for me so I have no idea what you are referring to.
Roolku:
--- Quote ---R you don't need (i.e. connect to ground directly).
C is to suppress spikes and should probably be as close to the IC as possible. Personally I would put it where you drew it though (or even omit it). I guess a value of 47nF would be fine.
--- End quote ---
As a first attempt I could forgo both the resistor and the cap?
That would make this all a little bit easier.
--- Quote ---7) carefully dip a soldering iron on the single strand above the pin
8) hope it only connects to the one pin it is supposed to connect to
but maybe you have a better idea?
--- End quote ---
If your method proves difficult I may try conducting heat with a needle to a tinned wire glued in place. (or something)
Tomorrow I will attempt the repair of my dead player according to the repair post on misticriver. If that goes well I will attempt the USB mod *before* I do the RTC mod. If it goes badly I can practice on the dead unit and reconsider modding my good one. :o
Wish me luck! ;D
roolku:
--- Quote from: Davide-NYC on April 07, 2007, 01:50:51 AM ---bluebrother: the link you posted didn't work for me so I have no idea what you are referring to.
--- End quote ---
You need to select a country first. Then the second time you click the link it will direct you to the right page.
--- Quote ---As a first attempt I could forgo both the resistor and the cap?
That would make this all a little bit easier.
--- End quote ---
I don't know where the idea for a for the resistor came from (Can't see anything in the data sheet suggesting to have one).
The cap is 'good practice', it has no functional meaning.
--- Quote ---Wish me luck! ;D
--- End quote ---
Good luck.
Here is the patch: http://www.rockbox.org/tracker/task/6990
It uses the same key as the h300 (i.e. record). You can try it without the mod: hold record while the player is on and insert the USB cable. It should not enter USB mode, but instead show the little USB icon in the statusbar.
Once you have done the mod successfully the charging light will come on. (this is your indicator even without the patch, as it is controlled by hardware)
bluebrother:
--- Quote from: Davide-NYC on April 07, 2007, 01:50:51 AM ---bluebrother: the link you posted didn't work for me so I have no idea what you are referring to.
--- End quote ---
Damn. It worked when I tried it yesterday ... search for article number 146184 at farnell.com.
roolku: right, overlooked that. There are thicker versions available, but when I look at those tiny pins I don't think it should be that much of a problem. Just imagine the bonding wires inside of the chip ;-)
roelieboelie:
Very intresting topic! *bookmarked!*
Davide-NYC:
Weekend came and went. I didn't touch any of my irivers.... No time!
Stayed tuned I'll try to put in some time and effort tonight. :-\
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