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Replace main board on BM5

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lano
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lano posted on Fri, May 1 2015 11:24 AM

Hi,

My BM5 recently gave up, seems to be the main board. Has never been replaced, so I guess it has lasted quite a long time (500GB version).

Has anyone tried to replace the main board with the standard VIA EPIA-EX board? This main board only have a 1,5GHz processor compared to the B&O one that have a 2,0GHz processor. If you do this, do you have to flash the BIOS in order to get the BM5 to work?

Regards/LANO

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riverstyx
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Verified by lano

I checked the price of the motherboard a few years ago (out of curiosity) and if I recall correctly it was in the region of 400 to 500 GBP.

As Beobuddy mentioned, there are additional sockets on the stock Epia EX board although you should be able to desolder these (or perhaps even snip their legs off) to make the board fit.

As long as the bios chip on the original board is still working you may be able to simply swap it out to the new motherboard and avoid the need for the service tool.

I did remove the bios chip from my BM5 a while ago to take a backup copy of it (using an EPROM programmer) and it is my intention at some stage to have a play with the linux flash tools to see if I could flash a stock EX motherboard accordingly without resorting to removal of the chip, but it's one of those tasks on my todo list that is unlikely to happen until a motherboard failure in my BM5 forces it higher up the list!

Martin.

 

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riverstyx
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Hi,

I haven't really experienced any major performance issues with my BM5/BS5 although some have reportedly improved responsiveness with an SSD (assuming you can find a large enough one that will boot reliably in the BM5 - see the BS5 SSD discussion for details of the issues people were having when attempting this swap).

Obviously with the replacement motherboard, the raw CPU speed will now be around 75% of what it was originally and that may cause be the cause of any sluggishness you are experiencing. Not sure if you reinstalled or just swapped the motherboards over, if you reinstalled then may be that the BM5 is busy re-analysing your audio files for MOTS and that can make the system feel slow.

Either way, the reduction in processor speed should not be causing crashes / reboots. I would start by trying to rule out a fault with the replacement motherboard. MemTest86 is excellent software for testing your RAM and will often reveal any general stability issues with the motherboard / CPU at the same time, so trying this would be a good place to start. I would also check the event log to see if there are any clues there as to what might be causing the instability.

Please do keep us updated on how you get on.

Kind Regards,

Martin.

lano
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lano replied on Sat, May 16 2015 12:56 PM
I changed the hard drive to a SSD that I had since before. Spotify no works perfect, no lagging at all. Have been using it for two days and no reboots either. Works perfect controlling via MLGW from link rooms. I wounded if there was something wrong with the old hard drive or can it make this big improvement? I can't tell that much difference browsing N.Music, but for Spotify it is a big difference.

Very happy for now, let's see how long it works!
lechatsurletoit
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Hi,

By the way, how did you know the motherboard was broken, and that it was not coming from something else.

 

cheers,

Geurink
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Ik heb een BM5 die is gestopt. Het moederbord werk niet meer. Ik krijg geen enkel beeld, ook niet op een extra monitor.

Voedingspanningen zijn OK.  Volgens mij is hij te warm geweest en daardoor defect.

Nu zie ik dergelijke boorden op Ebay. die kan ik bestellen. 

Dan heb ik ook wel een servicetool die ik op een Stick kan zetten.

Mijn vraag is gaat dit werken. Het afhalen van enkele extra aansluitingen is geen probleem. 

 

Geurink
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Ik heb een BM5 die is gestopt. Het moederbord werk niet meer. Ik krijg geen enkel beeld, ook niet op een extra monitor.

Voedingspanningen zijn OK.  Volgens mij is hij te warm geweest en daardoor defect.

Nu zie ik dergelijke boorden op Ebay. die kan ik bestellen. 

Dan heb ik ook wel een servicetool die ik op een Stick kan zetten.

Mijn vraag is gaat dit werken. Het afhalen van enkele extra aansluitingen is geen probleem. 

 

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