Recent content by Jimmy Spangle

Everything is on correctly. That is the only thing I am sure of. But like all boards where someone else has been playing beforehand, anything could be wrong. I am calling it a day on this board too. I appreciate all YOUR help. I say yours as nobody else helped at all. Maybe the forum would be...

Thanks for all YOUR help. I note that nobody else offered any at all, so I appreciate your efforts. I am calling it a day with this old board.

I did check all traces and all resistors around SPI chip drop pulse at pin 2

R7402 is 91k (in circuit) 74000: Pin 40 3v or so pulse Pin15 3v or so pulse Pin 1 3v or so pulse Seems everything on this board is pulsing.

OK. Another day another try. Replaced U7201 and also replaced Q7260 and Q7261 at the same time U7201 pin 22 is 1.2v U7201 pin 23 is 8.41v U7201 pin 12 is 3.37v C7205 is 0.77v

I will check first thing tomorrow. I am ready to win either with logic solving or a large 4lb hammer now

This board has rabit hole problems. Solve one thing, another pops up.Not wasting any more time on it. Thanks very much for your help.It is much appreciated buddy.

Anyone got any ideas?

On the board itself.

Ok. here is the update: L7030 is 12.58v constant L7630 pulse L7100 pulse L7260 pulse L5801 pulse L7220 constant 3.3v L7330 pulse L7550 no pulse L7510 no pulse L7520 no pulse L3895 hard to tell without oscilloscope. multimeter from 35mv to 13mv and back to 35mv loop ALL_SYS-PWRGD pulse Q7221...

Just so others with more expertise can help you, are you saying that the screen is just a blank blue screen or that you gat the normal image, but in just a blue colour?

Yes, it pulses. For example at L7220 you get a quick burst that is around 3.3, but it is so quick I cannot tell anything without an oscilloscope. If I keep the meter probe on L7220 nothing happens again until I remove the probe. History? None that I have been told. It has unfortunately been...

This one has got me a little. Just bought this board yesterday (for pennies). I have not come avcross this before. Green light, fan spins for a moment (few turns) then stops, 3 seconds or so later repeats in an endless loop. So far: PPBUS_G3H is 12.58v PPBUS_S5_HS_COMPUTING_ISNS is 12.55v...

Aha. Now that makes sense. I missed that! The previous guy obviously put both resistors on and that is what threw me off. Never asume anything they say - for good reason. I am guessing that the U7201's I have fitted will have blown then? My soldering is as good as any I have seen, so quite...

Put F7040 and F7041 back on. getting 8.4v at L7031 pin 2 and the same at pin 23 of U7201 the one part I am confused over is the two resistors R7248 and r7249. can anyone confirm what they should be please?