It is currently Fri Nov 17, 2017 12:42 pm

All times are UTC - 7 hours





Post new topic Reply to topic  [ 9 posts ] 
Author Message
PostPosted: Sat Nov 04, 2017 7:34 am 
Offline
User avatar

Joined: Sat Jul 04, 2015 9:58 am
Posts: 563
Location: -29.794229 -55.795374
Hi.
I just were "gifted" with a non-working WiiMote (RVL-003) by a friend.
As I could see, the batteries leaked on it.
I rebuilt the positive battery contact, cleaned the board and there was current but it wouldn't turn on.
I discovered a broken trace from pin 9 of the U5 (M3375?) and pin 1 of U2 (6330A?).
Getting ths trace redone made the WiiMote to turn on, but a few seconds later it acts like the battery is dying very quickly.
I took a look at some pictures on the Internet, and all of them seem to have the C11 on board.
Mine hasn't and it seems that the battery leak just turned it to dust and was removed during the cleaning process. :?
Does someone knows the value of this capacitor? Am I right in think it being missing can cause this problem on the circuit?
Thanks in advance!


Top
 Profile  
 
PostPosted: Sat Nov 04, 2017 11:18 am 
Offline
User avatar

Joined: Fri Nov 19, 2004 7:35 pm
Posts: 3950
Find a repair enthusiast forum and ask there?

_________________
Here come the fortune cookies! Here come the fortune cookies! They're wearing paper hats!


Top
 Profile  
 
PostPosted: Sat Nov 04, 2017 12:16 pm 
Offline
User avatar

Joined: Sat Jul 04, 2015 9:58 am
Posts: 563
Location: -29.794229 -55.795374
Dwedit wrote:
Find a repair enthusiast forum and ask there?

I'll be very happy if someone can recomend me one.
I understand that here should be a forum more focused on NES development.
But I've got the best answers here.
Up to now I was mostly fixing NES stuff, so...
Anyway, thanks, I'll search for something elsewere...


Top
 Profile  
 
PostPosted: Sat Nov 04, 2017 12:30 pm 
Offline

Joined: Sun Apr 13, 2008 11:12 am
Posts: 6437
Location: UK (temporarily)
Usually I start of by looking for a schematic, but I haven't been able to find one for the Wii remote.


Top
 Profile  
 
PostPosted: Sat Nov 04, 2017 1:42 pm 
Offline
User avatar

Joined: Sat Jul 04, 2015 9:58 am
Posts: 563
Location: -29.794229 -55.795374
lidnariq wrote:
I start of by looking for a schematic

This was the first thing I googled before asking for help.
No luck either :-(
Although I found a clone Wiimote schematics, this part of the circuit is pretty different.
If I understood correctly, this circuit is responsible for the battery charge monitoring and to power up / down the whole the circuit.
Any similar thing that I can use as reference?

Unfortunatelly, my multimeter can't measure capacitance. :-(
If it could, it was just a matter of opening other wiimote and measure it.
Maybe I can build a small oscilator and change its feedback with known capacitances.
This way I could try to find a value near the original...


Top
 Profile  
 
PostPosted: Sat Nov 04, 2017 2:04 pm 
Offline

Joined: Sun Apr 13, 2008 11:12 am
Posts: 6437
Location: UK (temporarily)
In-circuit capacitance is usually quite difficult to measure, sadly.


Top
 Profile  
 
PostPosted: Sat Nov 04, 2017 5:03 pm 
Offline
User avatar

Joined: Sat Jul 04, 2015 9:58 am
Posts: 563
Location: -29.794229 -55.795374
Any educated guess?
I couldn't even find any of these component's datasheet. :cry:

Edit: I already tried a 100nf and a 22nf ceramic capacitors.
No difference noted. :-(
Maybe the problem is elsewhere...


Top
 Profile  
 
PostPosted: Sat Nov 04, 2017 5:16 pm 
Offline

Joined: Sun Apr 13, 2008 11:12 am
Posts: 6437
Location: UK (temporarily)
In an 0402 package? "smallish", but that's basically all I've got.


Top
 Profile  
 
PostPosted: Sun Nov 05, 2017 11:20 pm 
Offline
User avatar

Joined: Mon Apr 04, 2011 11:49 am
Posts: 1917
Location: WhereverIparkIt, USA
Seems unlikely the cap "fell off the board". If you really suspect the cap, and have a working one you could simply borrow the cap from the good controller to test you missing cap culprit theory.

_________________
If you're gonna play the Game Boy, you gotta learn to play it right. -Kenny Rogers


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group