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Just checked PP3V3_G3H and it's now only showing 2.32v

P_IN (PPDCIN_G3H) - 5.20v AUX_DET (TBA_AUX_DET) - 1.29v , VDDA (TBA_VDDA) - 5.13v VDDP (TBA_VDDP) - 5.13v SMC_RST* (SMC_RESET_R_L) - 0v AUX_OK (SMC_AUX_OK) - 2.32v AMON (CHGR_AMON) - 0v BMON (CHGR_BMON) - 0v SMC_RESET_L - 0v

Are these the readings you asked for? I wasn't to sure. These are without battery. DP_INT_HPD - 0v TBA_AUX_DET - 1.29v TBA_VDDA - 5.13v TBA_VDDP - 5.13v SMC_RST_IN - 0v SMC_RST_BTN_L - 0v SMC_RST_BTN_R_L - 0v SMC_AUX_OK - 2.32v CHGR_AMON - 0v CHGR_BMON - 0v

I found a replacement U2890 but it made no difference and besides, I think if it was the ROM I would have power cycling right? Do you think it could be the HAL sensor or am I just unlucky and the two CD32's I bought new off ebay are crap??

What did you work out from the readings I gave you at C7050? Where do I go from here?

With F7000 removed voltage at C7050 = 0v Bare in mind I only have charger plugged in and not battery Could it be a bad U2890 Rom chip? Does the ROM chip U2890 W25Q80DVUXIE have to come from a donor or can it be purchased from places like mouser?

PPBUS_G3H voltage with battery connected = 0.97v Noticed that PPDCIN_G3H_CHGR_R = 5.20v but PPVIN_G3H_P3V3G3H = 4.88v . Does that sound correct to you???

Was the diode mode reading for ppbus_g3h ok??

Tried that. Still stuck at 5.19v 0.02a

I went ahead a replaced both CD32's but problem still persists 3V3_G3H = 3.4v PPBUS_G3H = 0.28v PPDCIN_G3H = 5.20v PPBUS_G3H = 0.428v diode mode

Was power cycling but after reflowing CD32's power cycling has stopped Amp meter shows 5.19v 0.02a Has had liquid damage in the past as white markers are red. No signs of corrosion PPBUS_G3H = 0.09v PPDCIN_G3H = 5.20v PPBUS_G3H resistance to ground = 14.52MOhms I'm thing to replace the...

They are both good. No short on cap and resistance on R7883 = 9.93K ohms (measured in circuit) Is P1V8S0_EN too low at 1.5v ?

P1V0FW_VFB = 0.3v PP3V3_S0 = 3.29v PP3V3_S3 = 3.29v P1V0FW_VFB = 0.49v P1V8S0_LX = 0v P1V8S0_EN = 1.50v P1V8S0_FVB = 0v

0v on L7700 0.5v on L7780 1.49v L7300 .99v L7100

Hi MacBook 15" 2008 board 820-2532-A It would not power on but I repaired it so it now powers on but Beeps once every five secconds. This goes on forever. According to Apple's support site this indicates a RAM issue or RAM not being detected by the Mac. Have tried swapping out the RAM but no...

There was a short on PPVOUT_SO_LCDBKLT caused by a bad LVDS connector. Replaced connector and now all good. Thanks again for your help and support. Until the next one - Adios!

AliExpress and ebay

Yes all readings were carried out WITHOUT screen connected. Shall I do them again with screen connected and send them too you?

When I'm checking voltages at U7700 should I have the screen plugged in or does it not make a difference?

If you mean U7700 then I have changed it but the same problem persists. Thanks I will check to see if there are any shorts to its connectors