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So, if i have this correct, PD301 on the schematic is the diode I am after?

You are correct with the board model. And after spending money on falsely described files claiming to be schematics this would also seem to be the case...LOL There is a chip BQ24780 on the bottom ( directly under thePD303). Full chip description is BQ24780 TI 591 C9NE board designation is PU301...

So, quick info first..... Lenovo Ideapad 500s-13isk. no power to the board. Narrowed down to a blown diode. Can not find any info at all anywhere on this component. Not to buy, not to get spec's, not to get equivalent. Designation on the board is PD303. Got one other on the board that is...

Yep definatly red to ground and black to point/pin

Oh, hang on, your post says resistance to ground so the readings are :- pins 4/13= 21.56 kohms pins 5/14= 21.51 kohms pins 6/15= 9.99 kohms Hope I got it right... :)

sorry for the delay in coming back to you, something really odd is going on..... So, I have an Isotech IDM 505 Multimeter. When I test for a short to ground on pins 4/5/13/14 i get a quick beep and the display shows O.L and on pins 6/15 i get no beep and O.L on the display. Now I am expecting to...

i will be back on this on Monday 2informaticos so will get the measurements you require then. The old battery was showing as not detected or chargeing, and when the new one went in it was working OK for a couple of weeks. I will get another battery in the meantime just to discount the new one...

Good morning all. I know I am probaly going to get trolled here and the problem is more than likely so evident.... but I dont seem to be able to locate the issue or what I am looking for as I am getting strange readings. So as follows:- J7050 pin 7/8/9/16/17/18-- gnd pin 4/13-- alternates 3.42v...

I mentioned ASD (EFI version), not AHT. I am sorry, my fault... i used the asd that was on the mbp when pressing D. How stupid of me to think that might be the right one You told something about some sensor issue... I said I suspect a sensor issue however this is not confirmed as I said " not...

2informaticos Been tested with the keyboard and touch pad connected, disconnected and touch pad from another A1278 plus new keyboard connected, USB keyboard and mouse connected with and without the original keyboard and touch pad both connected and disconnected, both together and singularly as...

Hi Guys. Really odd one. MBP A1278 820-3115-B. Come in for running extremely slow. Normal things, slow boot, cursor judders, slow to load web pages and load apps. Opened it up, no sign of liquid ingress anywhere. board is dusty so blew off with compressed air ( from a compressor not a can)...

2informaticos . I do not know where in the world you are. But if I am ever in your area, no matter when, I want to buy you a beer. You make this seem so simple. PRAM reset did the trick.:D:D:D:D:D

Basic problem fault:- Customer gives me the above mentioned MBA 4.2 claiming a battery issue and "virus" on the hard drive. Initially plugged in the magsafe and the LED went green but failed to power on. I did an SMC reset and it powered on. However, it runs horrendously slow. Rebooted to the...

From a complete newbie to electronics even thought I have been in the industry for 22 years doing PC support, ultrasonic does not repair blown components etc. As described by my esteamed forum user chicocomputerclinic ( hey get me with fancy words), the ultrasonic will clean below the components...

I have recently had a MBA A1466 in for a liquid damage job. I had to buy the ASD from Vinafix as there was an issue with the logicboard. I have now got an A1369 in. I have had a looksie ( as you do) and it has got ASD ver 3A225 on it. Obviously, as I do not have this version, is there a way...

hi 2informaticos , that worked a treat. all up and running, thank you very much and Happy new year.

Thank you 2informaticos . I did try to provide as much as I could. I didnt realise at the time I was in resistance, I will make sure that I am in the right mode, should the need arise again. I will be back in work on Monday so I will update you then on the progress.

Sorry, thouhgt I had meter on diode... Pins 6&8 when tested with red on gnd and black on either pin or pin 1 of c6990 or the probe point in between I get a quick beep and OL on the meter. I have gone around the other pins in diode mode with the black on pin 8 and touched the others with OL all...

OK, L6995 Pin 1 0.082v 19.11Kohms Pin 2 0.074v 19.27Kohms U6990 Pin 1 0.032v Pin 2 0.077v Pin 3 0.049v Pin 4 0.064v Pin 5 gnd Pin 6 & 8 0.031v Pin 7 NC L7030 Pin 1 0.303v 12.9 Mohms Pin 2 0.302v 14.5 Mohms U7000 Pin 3 3.933v Also, if it helps, nowhere on the board is getting warm. Edit...

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