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I guess if ya have fewer than 5 fingers per hand yer SOL! <snicker>"fixpc" <fixpc@withoutemail.com> wrote in message
news:43f44f26$1@127.0.0.1...
I have deviced method to desolder a capacitor from motherboard much
easily and without burning a single finger by using single hand ( 5
fingers) in about 10-20 seconds.
Well ya gonna tell us genius ?? Or are we supposed to plead for this
breakthrough in an elementary task?
--
Regards ......... Rheilly Phoull
Hmmm, I've only got 4!!"Rheilly Phoull" <Rheilly@bigpong.com> wrote in message
news:43f45521$0$22049$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
"fixpc" <fixpc@withoutemail.com> wrote in message
news:43f44f26$1@127.0.0.1...
I have deviced method to desolder a capacitor from motherboard much
easily and without burning a single finger by using single hand ( 5
fingers) in about 10-20 seconds.
Well ya gonna tell us genius ?? Or are we supposed to plead for this
breakthrough in an elementary task?
--
Regards ......... Rheilly Phoull
I guess if ya have fewer than 5 fingers per hand yer SOL! <snicker
Digikey in the United States sells these. ChuckI am experimenting repairing a dead thinkpad x20. The machines power light
flicks momentarily when the dc jack is inserted or removed.
I accidentally shorted a couple of pins on this IC, and now the behaviour is
much different, with lights doing funny things.
Anyhoo, the machine was dead to begin with..
I wonder if somebody could please tell me what this IC does, and how I might
find a replacement to try out?
Here's a picture:
http://www.uk2sucks.net/ic.JPG
thanks,
Carl
It's a mosfet switcher that provides 5 volts for the usb port.
Ray L. Volts wrote:
I guess if ya have fewer than 5 fingers per hand yer SOL! <snicker
Hmmm, I've only got 4!!
There are several X20 motherboards on ebay right now. One is bad, butI am experimenting repairing a dead thinkpad x20. The machines power light
flicks momentarily when the dc jack is inserted or removed.
I accidentally shorted a couple of pins on this IC, and now the behaviour is
much different, with lights doing funny things.
Anyhoo, the machine was dead to begin with..
I wonder if somebody could please tell me what this IC does, and how I might
find a replacement to try out?
Here's a picture:
http://www.uk2sucks.net/ic.JPG
thanks,
Carl
I wonder if somebody could please tell me what this IC does, ...
Here's a picture:
http://www.uk2sucks.net/ic.JPG
Thanks everybody, your help is very much appreciated. Thanks for the eBayOn Thu, 16 Feb 2006 10:34:16 -0000, "carl0s"
carl@noitsnotcss-networks.commy.invalid> put finger to keyboard and
composed:
I wonder if somebody could please tell me what this IC does, ...
Here's a picture:
http://www.uk2sucks.net/ic.JPG
Siliconix Si4435 P-Channel 30-V (D-S) MOSFET:
http://www.vishay.com/docs/70149/70149.pdf
http://www.vishay.com/doc?72123
AFAICT, you have two SMPS circuits in the photo. One uses a low power"Franc Zabkar" <fzabkar@iinternode.on.net> wrote in message
news:deo9v1tj6u8jcjr04o6mtvkkjo27dk26g9@4ax.com...
On Thu, 16 Feb 2006 10:34:16 -0000, "carl0s"
carl@noitsnotcss-networks.commy.invalid> put finger to keyboard and
composed:
I wonder if somebody could please tell me what this IC does, ...
Here's a picture:
http://www.uk2sucks.net/ic.JPG
Siliconix Si4435 P-Channel 30-V (D-S) MOSFET:
http://www.vishay.com/docs/70149/70149.pdf
http://www.vishay.com/doc?72123
Thanks everybody, your help is very much appreciated. Thanks for the eBay
pointer. I have just purchased a replacement board for Ł43 including
delivery. Out of interest, is this MOSFET for the USB port then or something
else?
Those cylinders btw are the little electrostatic generators that are...I found 2 large resistors, constructed of some material
printed in a spiral around a ceramic cylinder. Both were cracked at
one end (where they were screwed to the pobe tip and the rest of the
meter...possibly someone screwed the unit together with too much
force.) One was labelled as 800 megaohm (!!!) made by Beman Mfg. Inc,
Component Division. ...
Angela,
I have the same model manufactured at approximately the same time
frame. We
have not experienced the problem you describe, but I did have the main
power
on/off relay go bad so it had to be replaced. I only mention this
since it
was a pretty easy fix and if you can't find any cold solder joints on
the
main
power board you may want to check the resistance of the relay contacts
themselves (mine would stick closed after the set was turned off, but
I
could
imagine that they could just as easily become resistive and have the
potential to
fail in the manner you describe as well).
After dismissing cold solder and checking the other components Leonard
cited, I'd look at the relay. Hope you can get this fixed. We still
love
our set. If you need a schematic, let me know as I think I have the
service
manual somewhere.
Bob
"Angela D'Andrea" adandrea@austin.rr.com wrote in message
news:73a7a341.0311160728.26a6f322@posting.google.com...-
We have a Hitachi Ultravision Model 50UX26B projection TV that was
made in July 1996. Lately it has been shutting itself off at random
times. Hitting the power button on the remote usually turns it back
on again (you actually need to hit the power button twice; the first
time you hear the TV click and the second time it comes on).
Thanks for you help.
Angela D'Andrea
Austin, Texas-
Go to an Ace Hardware or the like and buy a new cord. Already made up
and ready to wire in. The wire will be HPN.
Bob AZ
He may be talking about internal wiring. Go to an appliance repair shop andGo to an Ace Hardware or the like and buy a new cord. Already made up
and ready to wire in. The wire will be HPN.
The power amp appears to be direct coupled so I'd guess a few blown upI hoped that some cheap BD441/442 transistors might be sufficient for
me to find out if the rest of the circuit was OK. They are at least
rated for the voltage (73 volts rail-to-rail). But putting them, and
new 0.27R resistors, in the circuit and powering-up resulted in smoke.
I guess their characteristics (higher gain, lower current) are too
different, or there's something else wrong with the circuit. At least I
only blew up a few pence/cents worth of components.
Any suggestions about equivalent transistors at sensible price? Any
ideas how I can try things out while minimising the chance of more
fireworks?
use a variac (variable AC source) to slowly bring the voltage up. wire aIn article <1140609700.574000.203690@o13g2000cwo.googlegroups.com>,
chase_p_a@yahoo.co.uk> wrote:
I hoped that some cheap BD441/442 transistors might be sufficient for
me to find out if the rest of the circuit was OK. They are at least
rated for the voltage (73 volts rail-to-rail). But putting them, and
new 0.27R resistors, in the circuit and powering-up resulted in smoke.
I guess their characteristics (higher gain, lower current) are too
different, or there's something else wrong with the circuit. At least I
only blew up a few pence/cents worth of components.
Any suggestions about equivalent transistors at sensible price? Any
ideas how I can try things out while minimising the chance of more
fireworks?
The power amp appears to be direct coupled so I'd guess a few blown up
transistors back down the line too.
--
*Women who seek to be equal to men lack ambition.
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.
Some amplifiers of this vintage were DC couple all the way back to theThe power amp appears to be direct coupled so I'd guess a few blown up
transistors back down the line too.