G5 2.7 Not Seeing All Ram

[gavinstubbs09]

So I recently received a LCS G5 that works right, unlike my other one. However, this new one at one point in it's life received a new Motherboard, LCS, and Power Supply.

My issue however is in the ram area. The crap G5 would detect all 6GB of ram I had in it, but my new one only detects 4GB. I've tried things like swapping the sticks with working slots and physically cleaning the 3rd slot on each side. Anyone have ideas? Or if I should find a heat gun and try things like that? I'm a bit bummed. Wanted that 6GB of ram!

Thanks!

 

[Altemose]

So I recently received a LCS G5 that works right, unlike my other one. However, this new one at one point in it's life received a new Motherboard, LCS, and Power Supply.

My issue however is in the ram area. The crap G5 would detect all 6GB of ram I had in it, but my new one only detects 4GB. I've tried things like swapping the sticks with working slots and physically cleaning the 3rd slot on each side. Anyone have ideas? Or if I should find a heat gun and try things like that? I'm a bit bummed. Wanted that 6GB of ram!

Thanks!

What happens if you insert an exact pair into the third slots? Sounds like the controller which is on the LB using ball grid array may be on its way...

 

[gavinstubbs09]

What happens if you insert an exact pair into the third slots? Sounds like the controller which is on the LB using ball grid array may be on its way...

All the 6 sticks in it are the same, I was kinda fearing this would happen.

 

[Altemose]

All the 6 sticks in it are the same, I was kinda fearing this would happen.

What happens if you heat that area between the RAM slots to the right close to where the fan would be with a dryer or heat gun? Should tell you really quick if it recongnizes it. Pull all other RAM but the trouble slots.

 

[gavinstubbs09]

What happens if you heat that area between the RAM slots to the right close to where the fan would be with a dryer or heat gun? Should tell you really quick if it recongnizes it. Pull all other RAM but the trouble slots.

After tinkering with it I booted up a ASD disc and that said that 2 dimms were bad, how, I don't know but I'm stuck with 4GB Owell!

 

[Altemose]

After tinkering with it I booted up a ASD disc and that said that 2 dimms were bad, how, I don't know but I'm stuck with 4GB Owell!

What happens if you put them in the "bad" slots?

 

[gavinstubbs09]

What happens if you put them in the "bad" slots?

I'll test it once I get the chance

 

[Altemose]

I'll test it once I get the chance

I am curious on this one.

 

[gavinstubbs09]

I am curious on this one.

So I finally got around to it, and the ram works fine in whatever machine I put it in. So it's the 3rd ram slots on each side in the G5.

 

[Altemose]

So I finally got around to it, and the ram works fine in whatever machine I put it in. So it's the 3rd ram slots on each side in the G5.

I am guessing it is the classic BGA controller failure...

 

[Zotaccian]

I have same kind of thing with my G5, only outer slots give chime... so in G5 systems it should not matter which slots you install sticks if you just install them to matching slots? If so, then I could stop waiting for new ram sticks and go try reflowing today...