156 Infocenter display fades when warm - Alfa Romeo Forum
You are currently unregistered, register for more features.    
 
  Home Forums AO Club Member Gallery Classifieds Trade Directory  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT


Reply
 
LinkBack Thread Tools
  #1 (Post Link)  
Old 03-12-08
Status: -
Newbie
 
Join Date: Jun 2008
Posts: 3

Member car:

156 T-Spark Lusso

156 Infocenter display fades when warm

I have a '52 156 which is great. It has a small problem where the display on the infocenter only works properly at really low temperatures. On a warm day or once the heating has kicked in, the display starts to fade in vertical lines until it is completely blank. The only warning for ice on the road was the alarm sound today.

Could anyone tell me if they have heard of this problem and how to resolve it please? The guy I bought it from said the PCB just needed replacing but I wanted to check here. Does the whole unit need replacing?

Cheers
Reply With Quote
Sponsored Links
Advertisement
 
  #2 (Post Link)  
Old 04-12-08
Status: -
AO Gold Member
 
Join Date: Jul 2006
Posts: 7,051

Member car:

S212

Re: 156 Infocenter display fades when warm

They all do that to different extents, I got a 2003 156 brand new and it was never much different to yours.

I found that a quick turn to 'Lo' blasts cold air behind it and cures it for an hour or so!

It gets roasted in winter by the heater, and in summer by the sun!

Mine also didnt like cold temperatures!
Reply With Quote
  #3 (Post Link)  
Old 04-12-08
Pea Sea's Avatar
Status: is a state, condition or situation
AO Silver Member
 
Join Date: May 2007
Location: United Kingdom
County: North Yorkshire
Posts: 2,638
Images: 16

Member car:

166 2.5 V6 Sportronic

Re: 156 Infocenter display fades when warm

Mine does the same. I keep planning on taking the pcb out a re-soldering the joints (unless eveythings surface mounted) as it looks to me as though there are dry joints - i.e. when the soldered joint around a components leg/contact get hot the joint between the component and the pcb opens up. Very common fault in electrical goods like TV's/VCR's etc. If the connector to the display is a ribbon type then it's very likely that that is where the dry joints will be. I just need to get round to stripping the whole thing down. Might have a bash one night next week and I'll let you knwo what I find.


Avoid the Calamari

It sucks...

Reply With Quote
  #4 (Post Link)  
Old 04-12-08
Joss's Avatar
Status: Engine rebuild looming
Club Member
Membro Premio
 
Club Member Number: 1014
Join Date: Sep 2005
Location: United Kingdom
County: Dorset
Posts: 17,799
Images: 14

Member car:

156 GTA,E12 M BMW,MitoQV

Re: 156 Infocenter display fades when warm

I work for a company who produces clusters for major car manufacturers including LCD screens that go in MFD's on many cars. When I get into work tomorrow I will ask the guys in the electronics department what the cause of this might be and the best way to rectify it on a low cost.

Reply With Quote
  #5 (Post Link)  
Old 04-12-08
Pea Sea's Avatar
Status: is a state, condition or situation
AO Silver Member
 
Join Date: May 2007
Location: United Kingdom
County: North Yorkshire
Posts: 2,638
Images: 16

Member car:

166 2.5 V6 Sportronic

Re: 156 Infocenter display fades when warm

Nice one Joss
Reply With Quote
  #6 (Post Link)  
Old 04-12-08
OperationAlfa's Avatar
Status: -
Club Member
Membro Premio
 
Club Member Number: 118
Join Date: May 2007
Location: United Kingdom
County: Essex
Posts: 22,213

Member car:

GT 3.2 V6

Re: 156 Infocenter display fades when warm

Replace it with one from a post November 2003 car display.... They had cured the problem by then.

Strangely, they never had this issue in the 156 GTA's. My old 156 2002 1.8 had this and it annoyed me.. a lot!

My 2003 GTA did not.
Reply With Quote
  #7 (Post Link)  
Old 04-12-08
NineOneSix's Avatar
Status: Engine building cherry popped!
AO Platinum Member
 
Join Date: Dec 2006
Location: United Kingdom
County: Hertfordshire
Posts: 30,047
Images: 9

Member car:

GTV 16VT 260bhp

Re: 156 Infocenter display fades when warm

i remember that!
Reply With Quote
  #8 (Post Link)  
Old 04-12-08
Status: -
AO Gold Member
 
Join Date: Jul 2006
Posts: 7,051

Member car:

S212

Re: 156 Infocenter display fades when warm

Originally Posted by OperationAlfa View Post
Replace it with one from a post November 2003 car display.... They had cured the problem by then.
.
they are smaller!
Reply With Quote
  #9 (Post Link)  
Old 04-12-08
OperationAlfa's Avatar
Status: -
Club Member
Membro Premio
 
Club Member Number: 118
Join Date: May 2007
Location: United Kingdom
County: Essex
Posts: 22,213

Member car:

GT 3.2 V6

Re: 156 Infocenter display fades when warm

Originally Posted by cj romeo View Post
they are smaller!
they are a straight swap believe it or not.
Reply With Quote
  #10 (Post Link)  
Old 05-12-08
Status: -
AO Gold Member
 
Join Date: Jul 2006
Posts: 7,051

Member car:

S212

Re: 156 Infocenter display fades when warm

I'll take your word for it, but I measured both in situ for someone trying to fit an LCD into a MkI and the later one presents itself smaller.
Reply With Quote
  #11 (Post Link)  
Old 05-12-08
Joss's Avatar
Status: Engine rebuild looming
Club Member
Membro Premio
 
Club Member Number: 1014
Join Date: Sep 2005
Location: United Kingdom
County: Dorset
Posts: 17,799
Images: 14

Member car:

156 GTA,E12 M BMW,MitoQV

Re: 156 Infocenter display fades when warm

The guys at work asked if the problem has persisted from new or if the problem has become more apparent as the car gets older? It could be one of several problems.
The first could be a software problem. The MFD's (mid facia display) are tested to extreme temps and then the software is written to compenstate on the screen for the change in temp.
The second could be that the batch of screens are faulty. Are they TFT or dotmatrix. I haven't got one in my car so i can't go look.
The third and quite likely possibility is a connection issue. Manufactures are know to change connectors on circuit boards because one proves unsuitable. Have you simply tried swaping the screen for a newer type instead of the the whole board. That way uoi could determin if its software or screen malfunction. Not every car had the problem so there must be some spare MFD's about for an early model without he fault.

Sorry it's not a cheap fix. This is the best they could offer without actually seeing the MFD itself and watching it do it.


BMW E12 M535i, JC racing diff, Gaz coilover, Powerflex.
Alfa 156 GTA, Q2, Super sprint, CF2, EQ, KW coilovers, Eibach rollbars, Powerflex.
Alfa Mito QV , BMC filter.

GitList Member but not as high as Keithy! No Gibbo....I don't need a haircut AO Troublemaker! You have been warned

Last edited by Joss; 05-12-08 at 12:24.
Reply With Quote
  #12 (Post Link)  
Old 05-12-08
Status: -
Newbie
 
Join Date: Dec 2008
Location: United Kingdom
County: Hampshire
Posts: 4

Member car:

Alfa Romeo 156

Re: 156 Infocenter display fades when warm

I've got the same problem on my 2002 156 ... I bought the car second hand .. so i've just lived with the issue to be honest -- but in a perverse sort of a way i'm glad it's not just happening with me.
Reply With Quote
  #13 (Post Link)  
Old 06-12-08
Status: -
Newbie
 
Join Date: Jun 2008
Posts: 3

Member car:

156 T-Spark Lusso

Re: 156 Infocenter display fades when warm

Thanks all.

Cheers Joss, I bought the car second hand and it's hand the problem since the previous owner. It's a dot matrix display and it fades in vertical lines. I'll try swapping it for a newer display and see if this helps.
Reply With Quote
  #14 (Post Link)  
Old 22-03-09
Status: -
AO Member
 
Join Date: May 2006
Location: France
County: Picardie
Posts: 42

Member car:

156 GTA Q2

Re: 156 Infocenter display fades when warm

Hello

Any news about this issue ?
In France a lot of people has also the problem (as everywhere I guess).
If you have any good solution (except switching on the air conditionning) I should be interested.

I don't think it's a connection problem as the screen function correctly when temperature fall down.

thanks
Reply With Quote
  #15 (Post Link)  
Old 18-05-09
fastferret
Status: - Update
Guest
 
Posts: n/a
Re: 156 Infocenter display fades when warm

My display is the same.
I stripped it yesterday morning and cleaned the LCD Display contacts where the ribbon cables slide into the PCB connectors.
This usually works on other Hand held terminal displays that I've worked on, I use a pencil eraser (the pink type) to clean the contacts, it is an old trick. The rubber is very slightly abrasive and is perfect for cleaning fine metal contacts.

This has definitely helped but did not resolve the problem completely and i fully expect it to return again soon.

To clarify, the display is an LCD, it gives a reverse LCD display, it has a red filter behind it and an array of white LEDS to illuminate it from behind to give the red readout that you see. Change the filter to green and you'll have green display instead.
Reply With Quote
  #16 (Post Link)  
Old 17-01-11
yetyGT's Avatar
Status: -
AO Silver Member
 
Join Date: May 2010
Location: Slovakia
County: Bratislavsky
Posts: 1,062
Images: 16

Member car:

159 JTDm; 156GTA; 145 QV

The same issue is also discussed in this thread - http://www.alfaowner.com/Forum/alfa-...ml#post3891117 (156 faulty computer display)
Reply With Quote
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT

Tags
156, display, fades, infocenter, warm

Thread Tools


Recently 'Read'
No History to show

Useful Links
Lost Password?
AO Merchandise
FAQs
Register

External Links
Alfa Romeo 156...
2009 Alfa Romeo...
2011 Alfa Romeo...
Alfa Romeo GT...
L@@K~JUST...

Alfa Romeo

Recent Image

Project Halo Uk -...

View JabawokJayUK's images

Search

Forums

Classifieds
   

Gallery

Social Groups
   

Members
   


Did you know..?
Did you know..?
You can change the look and feel of AO by changing your colour scheme

   

New To Site? Need Help?

All times are GMT. The time now is 11:12.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740