Re: Toshiba Tecra A11 (PTSE0A) Power Issues / Schematic?
Thanks atsio.
Would this be consistent with the wrong power supply being used? I suspect it had 19v put through it as an external hdd that came with it had 19v put through it taking out the 12v line.
JCIT
Josh
Last Activity: 10-14-2016, 02:58 AM
Joined: 01-09-2014
Location: Central Coast/NSW
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Re: Toshiba P840 Suicide
The power IC is an ISL95837HRZ, which the data sheets are still confidential.
I did some further diagnosis on the board today and it turns out some of the coils are shorted.
All this from saving a few bucks buying from auction.....Leave a comment:
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Re: Please help me
There is an online course run by the Siva institute, I'm saving my pennies for it so I can take my little repair shop up a step.
[url]http://www.sivainstitute.com/neweng/[/url]Re: Please help me :(<br /> <br /> .../neweng/[/url]Leave a comment:
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Re: Toshiba Tecra A11 (PTSE0A) Power Issues / Schematic?
Sorry I did mean 15v.
By the battery connector is an A2718
[url]http://pdf1.alldatasheet.net/datasheet-pdf/view/113155/NEC/UPA2718GR.html[/url]
1-3 = 1.42v
4 = 1.37v
5-8 = 1.67v
Impedance infinity on all pins
Another A2718 is near the DC Jack
1-3 = 15.2v
4 = 15.2v
5-8 = 0v
Impedance is infinity on 1-4 and 23kOhm on 5-8Re: Toshiba Tecra A11 (PTSE0A) Power... did mean 15v.Leave a comment:
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Re: asus A42N usb ports not working
I had this once when one of the data pins on another usb port on the same bus had bent and shorted to ground.Leave a comment:
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Re: Toshiba Tecra A11 (PTSE0A) Power Issues / Schematic?
I defiantly have 0v at pin 19 (Vref)
Am I understanding correctly that pin 5 & 22 should be 19v (Hi-Z?)
Does all this mean the IC in question is faulty or is the 5v regulator at fault?Leave a comment:
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Re: Toshiba Tecra A11 (PTSE0A) Power Issues / Schematic?
Ok ive tested the lot, (a few corrections... i was tired?) All double checked.
I should be getting 10v at the battery connector shouldnt i? its only 5v.
1 - 15v
2 - 15v
3 - 15v
4 - 2v
5 - 2v
6 - 0v
7 - 0v
8 - 1.1v
9 - 1.1v
10 - 0v
11 - 0v
12 - 1.4v
13 - 0v
14 - 1.5v
15 - 1.4v
16 - 1.4v
17 - 0
18 - 0
19 - 0v
20 - 0
21 - 0
22 - 15v
23 -...Leave a comment:
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Toshiba P840 Suicide
I have a P840 that hard powered off while I was using it never to come on again (kinda). I was using an adapter from an Acer that is also 19v and am baffled as to how it happened.
While I had it apart, I was testing for shorts with all power removed, then once I put the battery back in (still no AC) it would power for a few seconds and then shut off, the only way I could then replicate that was to test all the battery pins for continuity (discharging??), after doing that I could put the battery back in and it would power for a few seconds and then shut off again.
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Re: Toshiba Tecra A11 (PTSE0A) Power Issues / Schematic?
Thanks atsio, I'll check tomorrow when i'm back at the shop and give the rest of the voltages, would have done them all today but was running out of time.
I have since realized that the Toshiba binary led errors have to be reversed, so im not getting A2h, I am getting 45h which is S3Vvoltage is under 3.14V, can anyone confirm that i am converting this code correctly?Leave a comment:
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Toshiba Tecra A11 (PTSE0A) Power Issues / Schematic?
Hi everyone,
I am desperately after a schematic for this board.
The unit cam from another repair store with no power issue, no lights, nothing.
I assume someone tried to power it with 19v (its a 15v unit) as a smd fuse was blown, after replacing it the DC power light is on, however no battery charge or response from power button.
Manually shorting the 3v 4th pin (on pwr flex conn) to ground gets the unit to throw an error sequence on the dc_in led (10100010) which i translated to A2 (am I wrong?) which in the service manual is ;
A2h 1R05-E1V... -
Re: New Members - please post your introductions here
Hi everyone,
I run a small PC repair store in Australia and have been expanding my skills into board level repair.
This forum seems to be a wonderful place to share and gain knowledge and hope to be around for a while.Leave a comment:
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