Question about Acer Aspire 5920-6727 Notebook

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I have an acer 5920G. And i had a blinking led on the power supply. I used the info found on here and the problem was a defective capacitor. I removed it and the laptop was booting again. I know they say i don't have to replace the part but I want to replace it. Cause it should be good for something. Only problem is I don't know how much farrat the capacitor should be. I can find thousands of them. But i don't know which one. SO if anyone knows for what part i can replace it. PLease let me know

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Posted on Jan 02, 2017

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SOURCE: Acer Aspire 5920G wont play dvd, it wont even recognise them!

If it recognises cd but not dvd it means the drive is faulty. There is 2 lasers one for cd and one for dvd. The dvd laser is faulty. It also means that it is not dirty lens because it reads cd's.

Posted on Aug 18, 2009

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SOURCE: My Acer Aspire 5920 is not booting up. When the

Your motherboard is probably shorting out your A/C adapter, you may need a new motherboard. With a Dell, the A/C adapter light will be green when plugged into the wall but as soon as you plug it into the PC the green light goes off. Which means that the Motherboard is shorting out the A/C adapter...

hope this helps

Posted on Sep 08, 2009

Testimonial: "Thanks for the reply! This just confirmed what I had been suspecting looking at other sources on the web. "

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First of all you have to determine if the problem is the GPU (graphics processing unit) or a possible bad connection on the inverter.

To check this you will need to plug an external monitor to the laptop and use the keyboard toggle to switch screens, usually its hold down Fn and press F6 or the F key with a monitor icon on it.

If the external monitor comes on then the problem maybe the inverter.

To check this remove the screen bezel (plastic screen surround). At the bottom of the screen you will see an elongated piece of circuit board with wires coming from either end covered by frosted plastic.
That is the inverter, check the connections on the inverter (both sides) and power the laptop up to check the display, to remove it gently pull the plugs from each end and remove the screw from the middle and pull the board away.
Look on the back of the inverter itself for a copper coil, if you re-solder the solder points around the coil you may find it works again as components that suffer from extreme heat the solder joints dry causing bad connections, re-floating the solder solves the problem in 90% of cases.

Good luck.

Posted on Sep 14, 2009

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SOURCE: Acer aspire 4930 wont turn on

You have done the right things by working on some process of elimination.
try removing the battery and the AC adapter from the laptop hold down the power button for about 40 secs then try with power. IF this doesnt work chances are its a Motherboard failure.
hope this helps a little

Posted on Nov 03, 2009

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SOURCE: Battery light blinks on Acer 3680 but won't boot

yes you have a problem inside your laptop.find the slot of memory then remove easy the memory then make a clean the memory then put it back again and try to but the unit.thats all...good luck and i hope its done..thanks

Posted on Jan 09, 2010

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1 Answer

My Samsung LED 46" tv (UN46D6050TFXZA) won't turn on. The standby led blink twice 5 time in each cycle. all the capacitors on power board look normal.

In most of the case the problem is defective LED strips inside of the panel, please try this:

1. Unplug the cable between the main board & the power supply, apply the AC power to the power supply, if the back lights came on, the problem is defective main board.
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look at the bottom of the laptop where you install the battery, there's should be what looks like metal contacts where the battery connects to the actual computer. make sure that when you installed the battery you didn't accidentally bend 2 of them so they were touching eachother. you may have created a direct short which is what caused your heat and the smell. try to plug the battery back in and be careful that you don't bend the metal contacts.

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It wont turn on. power light blinks red twice

Hi Smith,

2 flashes of the LED light is an error code for "Low DC voltage". The output voltage of the power supply is not normal(dropped) and the caused of this fault is a leaky/dried filter electrolytic capacitor on that section.

Leaky electrolytic capacitor has a physical indication of fault like bulged/dome at the top and can be easily identify through visual inspection. See sample picture below.


If you're handy with electronics and know how to solder and desolder parts on the board, check the power supply for obvious leaky capacitor. If you've found them, replaced it with same capacitance and working voltage that is printed on its body itself. Watch the video below for more info regarding electrolytic capacitor.

Dried electrolytic capacitor has no physical indication of fault, you must have a capacitor checker/tester to determine its condition or you may replaced all electrolytic capacitor in the output of the power supply, it will not caused you much because this is one of the cheapest part on that board(cost only $4 at the most).

Hope I helped you.
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I have this same problem. Blinking amber Light and no display. on close examination I am seeing the video image attempt to come up, but with no back lighting. I think there is a power supply problem. I will post again if I learn more.

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Many problems could cause the power supply board LED power light indicator to blinks.Capacitors are dying only one problems,but common one.Check carefully for dying capacitors are bulging ups or puffing ups on it tops.If find no capacitors dying and leakages,could be anything on the power supply board is dying or already dead.Must have to know major electronic skills and troubleshooting skills to find which components exactly.Best,just try website like,to a whole refurbuish power suply board for the replacement.

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Red led lit, but when remote on/foo button is pressed it just blinks. It never turns green indicating the TV is on. Set has no manual on/off switch. I am a retired radar technician, but without...

This LCD is using a power supply number: MLT168A. The common failure is with defective capacitors in the secondary side and you do not need schematics for this repair. Use the picture below as a reference to find the defective capacitors that show signs of bulging. You might also need to replace 2 capacitors under HS4.

Let me know if you need further assistance.


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1 Answer

The tv shuts off by itself and when i try to turn it back on it shuts back off and the Power and opc leds blink

I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
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Blinks twice pause blinks 4 times

Dead or Shutdown symptoms.
Dead symptom reported to be caused by the following:
1. Dead.
Found Q601 & Q602 shorted, R615 open, and IC600 on the A Board were the cause of the symptom.

2. Dead.
Found D614, Zener diode, on B+ line was shorted.

3. Set shutdown and the standby LED blinks 3 then 5 times.
Found 200v line was low. Disconnected CN706 on the C Board and found 200v now
present on CN706/pin 7.
Found: IC702 (C board) shorted the 200 volt line.
HQ Comments: C541 on the A Board could become defective if the 200v line is shorted since
the polarity on the capacitor will become reversed. R553 fuse resistor could also be opened
on the A Board.

4. Error code of 4 blinks .
Dead set press power button you hear the relay and you see red led flash 3 times and stops? Has no HV or other action. Tech removed the back as no 200 volt supply, did unplug CN706 and now has 200volts. Tech did remove the IC702 and same it comes up so needs this IC.

5. Dead. 5 blinks then 3 blinks. Found shorted Damper diode D504. Q502 has a built in damper, as well.

6. The TV does not turn On and the LED flashers 9 times.
Found one side of R610 open on the Base of Q690 on the A board.

7. Dead, 9 flashes, Q606
Would not start when cold, has stand by 5 but relay never energize.
No response from front panel or remote controls.
9 blinks is not in service manual.

Found Q606 (Zero Det.), on the A Board, had no soldered on the collector
of the transistor causing an intermittent connection.
Soldered the collector of Q606 and set returned to operation.
HQ Comments: Also refer to E30968554.

8. Dead. 5 blinks or 3 blinks
Found on the A Board D611 in the Power Supply open, and Hor. Output Q502 shorted.

9. Found Power Supply components D611 shorted causing Q600, Q601, and R615
to fail on the A Board.

10. No picture or sound. Standby flashes.
Found Q512 (Pin Out) shorted. on the A Board.

11. Dead. No sound or picture.
Found the FBT and Q502 were shorted, and R615 open on the A Board.

12. Dead
No power, Stand by light flashes 4 times.
Found T604 and IC601, replaced.
Found D611 on the A Board was the cause of the symptom.

13. Dead.
Found D534 shorted on the A Board.

14. Shutdown 4 Blinks.
Replacing R595, OCP Latch Q532 on the A Board, fixed the set.
PN 1-247-891-00, 330K 1/4 watt.

15. Unit shuts down after 15 mins.
Immediate shutdown - sometimes it give a 3 blink, sometimes nothing.
Found R595 (330K) was open located in the Q532 OCP Latch circuit.
R595 P/N 124789100 330k 1/4w

16. Won't power up. LED Blinks 4 times, B+ is very low
B+ is at 49V, +15/-15 only coming up to about 1 volt.
Wth Hor Out disconnected B+ only comes up to 50v.
Found D611 on the A Board was the cause of the symptom.

17. Intermittently does not turn on
Found a intermittent C633 on pin # 3 of IC600.
C663 P/N 113647911 Film cap .001uf 100v


If you need the service manual contact me

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