Dash bulb not working

J liddy · Dec 18th, 2023, 07:23

Hi all sounds simple but the area around the bulb fitting the PCB
Is not picking up the current from the PCB can I use 2 wires 1 to a screw and 1 to a earth its the bulb behind the fuel gauge that's not lightning up

Rversteeg · Dec 18th, 2023, 12:42

I soldered two wire two the light bulb itself and to suitable points on the PCB. I cannot exactly remember where and the single picture I could find of my instrument panel only shows one. It works fine though. Be careful when copying this that the light bulb now has a polarity and should be plugged in the right way.
No idea why the picture keeps coming up upside down, but I gave up rotating it.

Forrest · Dec 18th, 2023, 15:45

If you review this thread it contains my own attempt at working out the instrument cluster pinout along with some definitive Green Book information from Rversteeg.

https://www.volvoforums.org.uk/showthread.php?t=327845

This might help you trace and repair the defective joint on the PCB.

It did enable me to fix a similar illumination fault to yours; however, my speedometer repair was short-lived so I ended up fitting my original speedometer in a good secondhand cluster. A fix that is still working well.

jpliddy · Dec 18th, 2023, 18:16

thank you both for those 2 posts they are very helpful just if you remember where the safe place to take the wires to let me know ,my bulb did come on tonight while driving but went of again so still on the case thanks again

Rversteeg · Dec 19th, 2023, 08:52

Same issue, dodgy connection of the bulb on the PCB with intermittent working. I could not get it working reliably again, so I resorted to this more drastic method. Just follow the printed copper strip on the PCB to a suitable point to solder a wire to.

J liddy · Dec 19th, 2023, 12:37

OK are screws OK to shoulder to.i have some fine stranded wire

Dec 18th, 2023, 07:23	#1
J liddy Senior Member Last Online: Today 07:57 Join Date: Jul 2019 Location: Stoke on trent	Dash bulb not working Hi all sounds simple but the area around the bulb fitting the PCB Is not picking up the current from the PCB can I use 2 wires 1 to a screw and 1 to a earth its the bulb behind the fuel gauge that's not lightning up

Dec 18th, 2023, 18:16	#4
jpliddy VOC Member Last Online: May 3rd, 2024 14:15 Join Date: Dec 2006 Location: stoke on trent	bulb lighting thank you both for those 2 posts they are very helpful just if you remember where the safe place to take the wires to let me know ,my bulb did come on tonight while driving but went of again so still on the case thanks again

Dec 18th, 2023, 15:45	#3
Forrest VOC Member Last Online: Yesterday 13:22 Join Date: Feb 2008 Location: Gloucester	If you review this thread it contains my own attempt at working out the instrument cluster pinout along with some definitive Green Book information from Rversteeg. https://www.volvoforums.org.uk/showthread.php?t=327845 This might help you trace and repair the defective joint on the PCB. It did enable me to fix a similar illumination fault to yours; however, my speedometer repair was short-lived so I ended up fitting my original speedometer in a good secondhand cluster. A fix that is still working well.

Dec 19th, 2023, 08:52	#5
Rversteeg Master Member Last Online: Today 10:25 Join Date: Feb 2006 Location: Amersfoort (NL)	Same issue, dodgy connection of the bulb on the PCB with intermittent working. I could not get it working reliably again, so I resorted to this more drastic method. Just follow the printed copper strip on the PCB to a suitable point to solder a wire to.

Dec 19th, 2023, 12:37	#6
J liddy Senior Member Last Online: Today 07:57 Join Date: Jul 2019 Location: Stoke on trent	OK are screws OK to shoulder to.i have some fine stranded wire

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)