Alienware M14x R2 with 7 beeps error

[caspian]

Re: Alienware M14x R2 with 7 beeps error

now move to PU701 and measure voltage on pins 22, 28, 9, 33, 24 after turning on.
if you have got doubt on pin numbers, search the net to find its datasheet.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

Please buy and fit a new LCD cable first. Many Dell and Alienware (since it is owned by Dell) models will NOT boot up unless the LCD cable is correctly fitted and the screen is okay. Some models even got a specific beep code for that.

I haven't been able to find an LCD ribbon at a decent price, I found a cheaper one for an R1 that looks the same but the R1 & R2 LCD ribbons have different part numbers. I can't afford to sink too much into it if I can't fix the board as I spent $130 AUD to buy it and don't have a big budget, unfortunatly the LCD ribbon happend to be missing. I have used a DELL XPS M1730 without the screen attached before so hopfully Alienware is the same :-)

R1 42M68: $26.46 AUD
http://www.ebay.com.au/itm/Dell-Alie...53.m1438.l2649

R2 RJ31W: $60 AUD
http://www.ebay.com.au/itm/Dell-Alie...53.m1438.l2649

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

now move to PU701 and measure voltage on pins 22, 28, 9, 33, 24 after turning on.
if you have got doubt on pin numbers, search the net to find its datasheet.

PU701
pin 9 - 3.288V
pin 22 - 0.9mV
pin 24 - 1.348V
pin 28 - 0.9mV
pin 33 - 0.4mV

[caspian]

Re: Alienware M14x R2 with 7 beeps error

I don't have experience on this IC. I hope other technicians help.

[caspian]

Re: Alienware M14x R2 with 7 beeps error

no advice?

[dellxps15]

Re: Alienware M14x R2 with 7 beeps error

7 beep means lvds cable or bad lcd eprom.

[caspian]

Re: Alienware M14x R2 with 7 beeps error

it worth trying to go to a repair shop and ask them test the laptop using a proper LVDS cable before buying the cable.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

it worth trying to go to a repair shop and ask them test the laptop using a proper LVDS cable before buying the cable.

I'll inquire at some repair shops if they have a cable, hopfully they don't want to charge too much just to test, if they have one.

[caspian]

Re: Alienware M14x R2 with 7 beeps error

tell them I want to buy the cable only if it works on my laptop and bring the laptop disassembled and ready for connecting the cable. In this way, they test it for free.
note: do not test using a non-compatible cable because this may lead to bad damage to the board.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

Just a slight off topic question, can an M14x R1 screen be replaced with an LCD + ribbon cable from an R2?

[caspian]

Re: Alienware M14x R2 with 7 beeps error

upload the schematics of R1 to compare.

[Th3_uN1Qu3]

Re: Alienware M14x R2 with 7 beeps error

Just remembered, 7 beeps on Dell Inspiron and Vostro models with 4th gen Core i processors means display fault - and it happens when you power on such a board and or there is a fault in the cable or the screen - or if the cable is not connected. Could very well be the same here.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

upload the schematics of R1 to compare.

The computer shop said they don't have a cable and just sent me links to ones I've already seen on ebay.

I haven't been able to find a schematic for the R1 unfortunatly, I may be purchasing an R1 for around $80AUD with a broken hinge, if so I can try the cable from it.

Just remembered, 7 beeps on Dell Inspiron and Vostro models with 4th gen Core i processors means display fault - and it happens when you power on such a board and or there is a fault in the cable or the screen - or if the cable is not connected. Could very well be the same here.

Ah ok maybe so, thanks for that, I'll have to try with a cable before continuing I think :-)

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

The cheapest M14x R2 LCD cable I've found was $50AUD from https://www.parts-people.com/index.p...=item&id=14207, I'll post an update when it arrives, if it doesn't workout in the end, at least I'll have a complete display assembly for resale. :-)

[caspian]

Re: Alienware M14x R2 with 7 beeps error

I remember that your laptop has no cpu_vcore.
After buying the screen cable, you probably have to fix the cpu_vcore circuit as well.
However, it is also a bit possible that connecting the healthy screen cable eventually leads to cpu_vcore to get activated. but, I am not sure.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

Well... the cable finally arrived but it is damaged, I've emailed them for a replacement. What a bother :-(

I tried it out anyway but it powers on and shorts out

[caspian]

Re: Alienware M14x R2 with 7 beeps error

long distance shopping usually has this kind of problem.
sometimes they send faulty laptop parts to customer.
there must be some laptop part sellers in every country such that customer is able to attend the shop or buy parts from them through a trusted third person living in the far city.
generally, laptop repair in a city far from laptop part sellers is usually a bother.
that is why I love cities of laptop part sellers.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

long distance shopping usually has this kind of problem.
sometimes they send faulty laptop parts to customer.
there must be some laptop part sellers in every country such that customer is able to attend the shop or buy parts from them through a trusted third person living in the far city.
generally, laptop repair in a city far from laptop part sellers is usually a bother.
that is why I love cities of laptop part sellers.

They are sending me a replacement it's a part store in the US somewhere, I'd love to have a walk in store like that local to me

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

Finally I got the replacement cable but still 7 beeps, what should I test next? :-)

[caspian]

Re: Alienware M14x R2 with 7 beeps error

fix the CPU_VCore circuit.