512k ?

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Fred1212

Well-known member

• Mar 23, 2024

• #1

Hi Brains Trust. 512k bongs and the screen displays expected startup for about a second then black. Anyone experienced this and can head me in the direction of possible culprit/s Cheers

 

bibilit

Well-known member

• Mar 23, 2024

• #2

Bad or weak solder joint at J1

 

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Fred1212

Well-known member

• Mar 23, 2024

• #3

Thanks have checked this

 

Iesca

Well-known member

• Mar 23, 2024

• #4

Did you do re-flow or re-solder anything? Even if the harness has never been removed, it can still result in cracked joints over time.

 

robin-fo

Well-known member

• Mar 23, 2024

• #5

Fred1212 said:

Thanks have checked this

Click to expand...

It‘s almost impossible to see the cracks sometimes. Best reflow anyway

 

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Fred1212

Well-known member

• Mar 23, 2024

• #6

The AB is a new old stock and works perfectly with plus board. I suspect the LB maybe memory or? thanks