If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
The dreaded missing pixels
Well, one of the E39 diseases has infected my '03 530i. The dash display
has several lines of missing pixels in the trip odometer and OBC displays. I know this is not uncommon and I will probably replace the thing under warrantee. (If it happens outside of warrantee, there's a shop specializing in the repair.) Still, I'm curious. Does anybody know the cause for this malady? It seems intermittent ... lost a line of pixels, then they came back, then several went out, etc. R / John |
Ads |
#2
|
|||
|
|||
It's just the connections to the individual pixels if it's intermittent.
"John Carrier" > wrote in message ... > Well, one of the E39 diseases has infected my '03 530i. The dash display > has several lines of missing pixels in the trip odometer and OBC displays. > I know this is not uncommon and I will probably replace the thing under > warrantee. (If it happens outside of warrantee, there's a shop > specializing in the repair.) > > Still, I'm curious. Does anybody know the cause for this malady? It > seems intermittent ... lost a line of pixels, then they came back, then > several went out, etc. > > R / John > |
#3
|
|||
|
|||
A BMW tech showed me this once - there's a flexible wire bus which connects
to a circuit board. Each wire in the bus corresponds to one column (or row) of pixels. Over time, the contacts become intermittent. Apparently the way the bus was soldered/glued/whatever to the circuit board was insufficient to stand up to the real-life conditions of car usage. AFAICT, the board isn't subjected to a lot of vibration or heat cycling, so maybe the original contacts were just adhered in a less-than-robust method. -Ted ---- orig msg ---- >> Well, one of the E39 diseases has infected my '03 530i. The dash display >> has several lines of missing pixels in the trip odometer and OBC displays. >> I know this is not uncommon and I will probably replace the thing under >> warrantee. (If it happens outside of warrantee, there's a shop >> specializing in the repair.) >> >> Still, I'm curious. Does anybody know the cause for this malady? It >> seems intermittent ... lost a line of pixels, then they came back, then >> several went out, etc. >> >> R / John >> > > |
#4
|
|||
|
|||
Agreed. But the problem is well known. Still, the board (and everything else
in the car) is subject to vibrations and temperature changes in the course of daily driving, summer/winter temperatures, etc. "Ted Johnson" > wrote in message ... >A BMW tech showed me this once - there's a flexible wire bus which connects > to a circuit board. Each wire in the bus corresponds to one column (or > row) > of pixels. Over time, the contacts become intermittent. > Apparently the way the bus was soldered/glued/whatever to the circuit > board > was insufficient to stand up to the real-life conditions of car usage. > > AFAICT, the board isn't subjected to a lot of vibration or heat cycling, > so maybe the original contacts were just adhered in a less-than-robust > method. > > -Ted > > ---- orig msg ---- >>> Well, one of the E39 diseases has infected my '03 530i. The dash >>> display >>> has several lines of missing pixels in the trip odometer and OBC >>> displays. >>> I know this is not uncommon and I will probably replace the thing under >>> warrantee. (If it happens outside of warrantee, there's a shop >>> specializing in the repair.) >>> >>> Still, I'm curious. Does anybody know the cause for this malady? It >>> seems intermittent ... lost a line of pixels, then they came back, then >>> several went out, etc. > > >>> >>> R / John >>> >> >> > > |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Please Read: OWN A CAR? - YOUR MISSING OUT! | Edward Tyshkevich | Alfa Romeo | 1 | October 25th 04 07:58 PM |
missing wheel nut adaptors | John Brunt | Alfa Romeo | 7 | October 20th 04 10:21 PM |
A4 - 3rd seat belt clip missing? | Daz N | Audi | 1 | June 21st 04 08:40 PM |
SELESPEED MISSING 4th GEAR | ramskov | Alfa Romeo | 1 | May 1st 04 10:26 AM |