Dashboard Clock goes off? - Page 2 - Toyota Yaris Forums

CTScott · 03-25-2013, 10:44 AM

Quote:

Originally Posted by skoya

I will try with this connector,but not today.I will have to wait til weekend.
We don't have much Yaris in my town,so the second option falls thru.
By the way,I forgot to tell you,there is a smaller connector that connects speedo gauge with the hausing,or something like that.Anyway I will try to do something.Thank's again.

I happen to have a European digital cluster that I imported to experiment with. When I have a chance I will open it up and see if there is anything that I can think of that would cause the behavior you are seeing.

skoya · 03-25-2013, 11:21 AM

Quote:

Originally Posted by CTScott

I happen to have a European digital cluster that I imported to experiment with. When I have a chance I will open it up and see if there is anything that I can think of that would cause the behavior you are seeing.

Great,you do that,thanks.Then send me a PM.

skoya · 03-29-2013, 10:43 AM

Here is the cluster and the clock on the right side

CTScott · 03-29-2013, 11:12 AM

That is the one that I have. I just disassembled mine and hooked it up on my test bench to experiment with it. The clock and odometer are a separate assembly from the rest of the instrument cluster. Does anything at all display on the clock area of yours?

European Cluster.jpg

skoya · 03-29-2013, 06:37 PM

No nothing.Did you find something that can be replaced,or behind that LCD is a small electronic board.Maybe there is a malfunction,somethin broken or burned?

CTScott · 03-29-2013, 06:46 PM

Quote:

Originally Posted by skoya

No nothing.Did you find something that can be replaced,or behind that LCD is a small electronic board.Maybe there is a malfunction,somethin broken or burned?

The small LCD (which is actually a vacuum fluorescent display) for the clock and odometer is a separate assembly, so that could be replaced as it may be the bad part. There are three separate circuit boards - The large main on, the one that the speedometer display is mounted to, and the "Core" board, which snaps to the back of the large board. The Core board contains the primary processor for the cluster and it has the EEPROM where the odometer data is stored. Unfortunately you can't buy the boards separately from Toyota, but if you can track down one from a wrecked Yaris, which has a cluster with the same part number, then you can either swap the clock/odometer display onto yours or you can swap your core onto it.

skoya · 03-29-2013, 06:58 PM

Yeah,but used clusters cost over 100$ on ebay,so it is a bit expensive.My dad is a electrician,so i wil disassemble the cluster and give him.Maybe he can find the problem.Anyway thank you for your response,i will notify you if i find something.

CTScott · 03-29-2013, 11:03 PM

Quote:

Originally Posted by skoya

Yeah,but used clusters cost over 100$ on ebay,so it is a bit expensive.My dad is a electrician,so i wil disassemble the cluster and give him.Maybe he can find the problem.Anyway thank you for your response,i will notify you if i find something.

It looks like there is one driver for both the small VFD and the large one, so my bet is that it is the VFD itself. I have a couple of right hand drive Japanese digital clusters that I pulled apart a while back. I noticed that the small VFD is identical between the JDM RHD one and the European LHD one. I swapped one of the JDM ones into the European cluster and it works fine. I have a couple of them, so if you want to try one let me know.

VFDs.jpg

JDM VFD.jpg

skoya · 03-30-2013, 09:20 PM

Ok,i am interested,tell me how we gonna do this.But i still need to be sure where is the problem with my clock.Give me few more days to test it,then i am going to let you know.

skoya · 03-31-2013, 04:29 PM

Quote:

Originally Posted by skoya

Ok,i am interested,tell me how we gonna do this.But i still need to be sure where is the problem with my clock.Give me few more days to test it,then i am going to let you know.

Here is the Pic of LCD.I was wondering this black spot in the right corner,is this ok.I mean I see on both of yours it is visible.Then again as i disassembled the speedo,it had also two of these marks,so i think this is ok.

CTScott · 03-31-2013, 06:39 PM

That black spot does appear to be a normal part of how they manufacture the VFDs.

Since it is custom I can't find a data sheet for it. It would have been good if I could so that we could take some comparative measurements to determine if that is what is bad on yours.

skoya · 03-31-2013, 06:53 PM

Quote:

Originally Posted by CTScott

That black spot does appear to be a normal part of how they manufacture the VFDs.

Since it is custom I can't find a data sheet for it. It would have been good if I could so that we could take some comparative measurements to determine if that is what is bad on yours.

When I loooked at it,from each angle and side,i could not see any soldering error or something like that.It leaves now to test this small circuit board behind it.Then we shall see.

CTScott · 03-31-2013, 07:35 PM

Quote:

Originally Posted by skoya

When I loooked at it,from each angle and side,i could not see any soldering error or something like that.It leaves now to test this small circuit board behind it.Then we shall see.

The driver circuitry is actually on the bottom of the large board (where the large can shaped devices are). The small board on the back is the core board where the odometer data is stored and the main processor is located. I believe that that one is fine.

skoya · 04-02-2013, 04:34 PM

Ok Scott,here on this pic you can see these three transistors or whatever they are,seems to be burned.You can tell by their middle pins.I have isnpected them with ohmmeter,and the current flows on both sides instead of one.They are type MK 58.So when I turned the cluster on the other side,you can see clearly brown spots on this green pattern.Can you confirm that this could be the problem.You can see them right in the bottom middle section.

CTScott · 04-02-2013, 04:52 PM

Quote:

Originally Posted by skoya

Ok Scott,here on this pic you can see these three transistors or whatever they are,seems to be burned.You can tell by their middle pins.I have isnpected them with ohmmeter,and the current flows on both sides instead of one.They are type MK 58.So when I turned the cluster on the other side,you can see clearly brown spots on this green pattern.Can you confirm that this could be the problem.You can see them right in the bottom middle section.

That could be the problem or at least part of it. On mine all six of the transistors in that area check out correctly with the ohmmeter. I believe the 58 is a date code, since mine are all MK 61 on one cluster and MK 68 on another.

skoya · 04-02-2013, 04:58 PM

Quote:

Originally Posted by CTScott

That could be the problem or at least part of it. On mine all six of the transistors in that area check out correctly with the ohmmeter. I believe the 58 is a date code, since mine are all MK 61 on one cluster and MK 68 on another.

Where can i buy these.Is there anything on ebay,or some another web page.
And i need some characteristics for this type.

CTScott · 04-02-2013, 05:12 PM

Quote:

Originally Posted by skoya

Where can i buy these.Is there anything on ebay,or some another web page.
And i need some characteristics for this type.

I am not sure. The MK alone is not enough information.

skoya · 04-14-2013, 05:37 PM

Hey Scott,can you please help me with this transistor.I could not find nothing with this code MK 58.It has to be another name for it.

03-29-2013, 11:12 AM	#22
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	That is the one that I have. I just disassembled mine and hooked it up on my test bench to experiment with it. The clock and odometer are a separate assembly from the rest of the instrument cluster. Does anything at all display on the clock area of yours? European Cluster.jpg __________________

03-31-2013, 06:39 PM	#29
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	That black spot does appear to be a normal part of how they manufacture the VFDs. Since it is custom I can't find a data sheet for it. It would have been good if I could so that we could take some comparative measurements to determine if that is what is bad on yours. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
GI: "YarGauge" replacement clock module (Digital Tach, etc.)	CTScott	Items for Sale by private party	756	03-21-2013 09:22 PM
05 Echo changing time on clock	jambo101	DIY / Maintenance / Service	3	11-12-2011 05:34 AM
Dashboard mount for iPhone 4S?	shima	In Car Entertainment + Electronics (audio / video / alarm)	3	10-25-2011 10:22 AM
Dashboard remove ... ALL of it	Toji	Cosmetic Modifications (Exterior/Interior)	7	02-26-2011 07:30 AM
Setting the clock after DST change	ToddR	DIY / Maintenance / Service	10	03-10-2009 12:33 AM

03-29-2013, 06:37 PM	#23
skoya Drives: Yaris 1.0L Join Date: Mar 2011 Location: Bosnia,Sa Posts: 31	No nothing.Did you find something that can be replaced,or behind that LCD is a small electronic board.Maybe there is a malfunction,somethin broken or burned?

03-29-2013, 06:58 PM	#25
skoya Drives: Yaris 1.0L Join Date: Mar 2011 Location: Bosnia,Sa Posts: 31	Yeah,but used clusters cost over 100$ on ebay,so it is a bit expensive.My dad is a electrician,so i wil disassemble the cluster and give him.Maybe he can find the problem.Anyway thank you for your response,i will notify you if i find something.

03-30-2013, 09:20 PM	#27
skoya Drives: Yaris 1.0L Join Date: Mar 2011 Location: Bosnia,Sa Posts: 31	Ok,i am interested,tell me how we gonna do this.But i still need to be sure where is the problem with my clock.Give me few more days to test it,then i am going to let you know.

04-14-2013, 05:37 PM	#36
skoya Drives: Yaris 1.0L Join Date: Mar 2011 Location: Bosnia,Sa Posts: 31	Hey Scott,can you please help me with this transistor.I could not find nothing with this code MK 58.It has to be another name for it.