eSGEe!!

chilipeppermaniac said:
Astral what is it and what went wrong?
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It's the instrument cluster for my 2003 Volvo XC70. A common issue is for the solder joint to gice in and this one has lasted unusually long. I repaired it once already, maybe 2 years ago, by identifying the bad joints and refloating them. This time it's completely shot though. Volvo want $1200 to replace it but I'm in touch with a guy on ebay. He sells refurbished units, programmed for my car with the correct VIN and odometer mileage for $150. Fingers crossed he has one for me.
 
Astral Traveler said:
It's the instrument cluster for my 2003 Volvo XC70. A common issue is for the solder joint to gice in and this one has lasted unusually long. I repaired it once already, maybe 2 years ago, by identifying the bad joints and refloating them. This time it's completely shot though. Volvo want $1200 to replace it but I'm in touch with a guy on ebay. He sells refurbished units, programmed for my car with the correct VIN and odometer mileage for $150. Fingers crossed he has one for me.
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:fingersx: :fingersx: :fingersx:
 
Astral Traveler said:
It's the instrument cluster for my 2003 Volvo XC70. A common issue is for the solder joint to gice in and this one has lasted unusually long. I repaired it once already, maybe 2 years ago, by identifying the bad joints and refloating them. This time it's completely shot though. Volvo want $1200 to replace it but I'm in touch with a guy on ebay. He sells refurbished units, programmed for my car with the correct VIN and odometer mileage for $150. Fingers crossed he has one for me.
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Astral, I have a school friend who's business is to repair clusters. Want me to see what he might do for you?
 
I always wondered why circuit board designers didn’t do a simple step I did when I was designing them back in the 80s and 90s (or responsible for their design). It’s called back annotation and is meant to help the technicians that have to assemble and/or trouble shoot the boards. As the schematic is being created all the components get assigned numbers as they are added (R1, R2, etc). The completed schematic then gets handed off to the board layout folks who puts the circuit down on the card (all done on computers). Then the board layers and silkscreen (with the components numbers) gets generated and sent to a fab house to make the card. In AT’s picture above you can see R1 right next to R65. Well, when looking at a schematic and say you need to find R23, you have to look all over the board to find it!

The trick I did was after the board was laid out, I had the CAD designer renumber all the components, left to right, top to bottom, so R1 was in the upper right, R2 was next to it etc. The Back Annotation process just required the schematic (and hence parts list) to renumber the parts accordingly. Made board troubleshooting a lot easier to find the parts from the schematic.


18ACE2D6-8C7D-4534-93A5-3DB6D873A238.jpeg
 
Don O said:
I always wondered why circuit board designers didn’t do a simple step I did when I was designing them back in the 80s and 90s (or responsible for their design). It’s called back annotation and is meant to help the technicians that have to assemble and/or trouble shoot the boards. As the schematic is being created all the components get assigned numbers as they are added (R1, R2, etc). The completed schematic then gets handed off to the board layout folks who puts the circuit down on the card (all done on computers). Then the board layers and silkscreen (with the components numbers) gets generated and sent to a fab house to make the card. In AT’s picture above you can see R1 right next to R65. Well, when looking at a schematic and say you need to find R23, you have to look all over the board to find it!

The trick I did was after the board was laid out, I had the CAD designer renumber all the components, left to right, top to bottom, so R1 was in the upper right, R2 was next to it etc. The Back Annotation process just required the schematic (and hence parts list) to renumber the parts accordingly. Made board troubleshooting a lot easier to find the parts from the schematic.


View attachment 60659
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It because they don't want the boards to be serviced. They want to sell the victim a new one. And then when you find out it wasn't the board, they won't let you get a return credit because it was used. Even if installed by a factory tech.
 
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