Re: Clarion PU-2471A-G
Thank you for your input.
I was afraid of using a 25v one since I didn't knew if it could damage the auto radio.
Will search for one then.
Tyvm...
PCManiac
Member
Last Activity: 11-06-2023, 04:17 AM
Joined: 09-27-2012
Location: Portugal
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Clarion PU-2471A-G
Hello everyone,
My oldie C3 has a never serviced before Clarion PU-2471A-G radio.
Lately the car radio has been acting up with some banging noise and, when it happens (more frequent than not) it would cut the radio sound.
Most of the times it would recover some seconds after, some other times would take minutes or, in a couple of times, I had to full stop the car and start it back on.
Well, I took the matter of checking what was going on and, sure enough, I would find dead caps in there.
I did find these 3 busted capacitors:
C309... -
Re: Toshiba A300 - Tokin cap exchanged.
Hey guys, just a quick update on this.
These two laptops were fixed successfully after I got my tantalum and are working as happy ever since then.
One of them had as well a bad PSU, which was what was causing the sudden shutdowns and not powering on.
Thank you for your help.
Thank you allLeave a comment:
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Re: Toshiba Tecra M11-14K Bios with password
Hey guys,
Sorry for the lack of input here.
@ridamouh159 - thanks but I do not have a way to flash it.
I spoke with the client whom spoke to the guy who gave him the laptop and he found the password and I could set free it's bios.
Thank you for the help.Leave a comment:
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Re: SKytec smwa15-18-3
Thanks Andrew F. Ali
Won't scraping it remove masking?
And any idea in why did they added solder over the traces? Am guessing cause it was getting too hot from the current..Leave a comment:
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SKytec smwa15-18-3
Hey guys,
I got asked if I could repair this Skytec's subwoofer circuit.
It had one of the big caps dead so it got replaced, it was blowing the fuses so i replaced the IC TDA7294V cause it had a black (burnt) leg and didn't blow anymore.. yet, the marked trace started smoking.
Yes, the board already looked that terrible when it got to my hands..
And I apologize for the bad soldering on the IC.. I didn't notice it was that bad till I took these pictures.. :x
But still, any idea on why it is burning the track after I give it power?... -
Re: Toshiba Tecra M11-14K Bios with password
Thank you for your input.
Well, I have no way to flash it back so, I guess I have to pass it on then..
Bummer..Leave a comment:
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Re: Toshiba Tecra M11-14K Bios with password
No one? :\
eh..Leave a comment:
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Re: Toshiba Tecra M11-14K Bios with password
*bump*Leave a comment:
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Toshiba Tecra M11-14K Bios with password
Hey guys,
I got asked to format this Toshiba Tecra M11-14K.
My problem is that it has password on the bios so I can not change it's boot order.
So, does anyone know how to bypass the bios password?
Removing the cmos battery did not work as expected and I can not find the schematics for this board to try the D500 trick (if that even works at all)...
Toshiba made the great thing of not labeling any component at all on the board so yeah, I expect it to be a real PITA to find a way to bypass it.. haha
Anyway, pictures of the...Last edited by PCManiac; 04-08-2017, 07:46 AM. -
Re: how to check laptop charger amperage
Hi,
All I know is that you have to have some sort of load to test it.
Be it a light bulb, a Potentiometer or a laptop, you need a load.
And the multimeter has to be connected in series and on the amps rating.Leave a comment:
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Re: Toshiba A300 - Tokin cap exchanged.
I will keep this on hold till I get my tantalum caps and solder them to make sure am not missing anything.
Thank you allLeave a comment:
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Re: Toshiba A300 - Tokin cap exchanged.
Thank you guys.
ktmmotocross: Which ones are those coils you talk about and how to measure them?
rievax_60: checked those with no shorts found. Took the time to test 12 and 21 as well as I was at it since some one said in another post that those could be troubles as well...Leave a comment:
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Re: Toshiba A300 - Tokin cap exchanged.
Thank you all for your input.
Shuc - At first I tried that, unfortunately I wasn't able to do it so read some where in the forum that the center was negative as well and I could scrape the insulation off it.
Gabiz_ro - I listen the click on the motherboard side.
ktmmotocross - it has been running under load for the last 4/5 hours with no reboot. Still think it's a power source issue.. gotta try to get one to test.
rievax_64 - Mind trying to explain me which ones are the vcore mosfet? Gotta...Leave a comment:
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Re: Toshiba A300 - Tokin cap exchanged.
Greetings,
I have added the fourth cap and, still the same.. :\
any other suggestions?...Leave a comment:
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Re: Toshiba A300 - Tokin cap exchanged.
Thank you all for your suggestions.
Will do so!
I have read in other forums that 3 were enough and, to be honest, that's all I had laying around. Have to get another dead laptop donor board for those haha.
Thank you/ Obrigado.Leave a comment:
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Toshiba A300 - Tokin cap exchanged.
Greetings guys,
I got two toshiba A300 that were somewhat dead..
Changed both of their nec/tokin cap for 330 tantalum and they are working.
Altho, I would like to ask if some one has the boardview file of their board or if some one knows where can I buy it.
What they are doing from time to time, and I suspect is a charger fault, they turn the green light on. I press the button to turn the laptop on and it dies. The fan flickers and loses power.
I measured on the charger pins (the four pins, 2 red and 2 black) after the barrel plug and... -
Re: New Members - please post your introductions here
Hey guys,
A returning user here.
Been registered for a while now, asked some questions around and well, went to my normal life.
From Portugal, sys administrator that likes alot electronics, getting into board level repairs after checking some youtube videos from this Loius Rossman guy (great guy!). An expensive hobby like any other.
Hope to continue to grow my knowledge with the help of this well known and old yet full of talented people, forum.Leave a comment:
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