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LCD Radio Display

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Dreamer
Posts: 4
Joined: 29 November 2011
Year and Model: V70XC, 2000
Location: Sequim, WA

LCD Radio Display

Post by Dreamer »

After following the great instructions on this forum, I replaced a bad bulb in my radio. My LCD display is still unreadable at night. It displays the station but does not illuminate. Apparently those 5 little bulbs don't affect this. Any ideas?
Thanks, Roger
new member!

Ozark Lee
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Post by Ozark Lee »

Welcome to MVS,

The LCD display lamp is soldered into the front panel PC board and it takes a bit of additional surgery to get to it. There is a thin metal ring that surrounds the LCD display. It is typically mounted into the PC board with twisted tabs. On some versions all of the tabs got soldered to the PC board after they were twisted and on others there was only one tab that was soldered on.

At any rate you need to de-solder the tab(s) and remove the ring to reveal the lamp. It will have a blue filter on top of it.

What I have used to replace the lamp is a Radio Shack part number 272-1092 lamp to replace it and it is simply a matter of de-soldering the old lamp and soldering in the new one.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
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Dreamer
Posts: 4
Joined: 29 November 2011
Year and Model: V70XC, 2000
Location: Sequim, WA

Post by Dreamer »

Lee, Many thanks! I'll give it a shot.

Dreamer
Posts: 4
Joined: 29 November 2011
Year and Model: V70XC, 2000
Location: Sequim, WA

Post by Dreamer »

That wasn't too bad. Bulb replaced in about 1/2 hour. Unfortunately, the display now has a glitch and displays only parts of the numbers. Live and Learn!

JRL
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Post by JRL »

Dreamer wrote:After following the great instructions on this forum, I replaced a bad bulb in my radio. My LCD display is still unreadable at night. It displays the station but does not illuminate. Apparently those 5 little bulbs don't affect this. Any ideas?
Thanks, Roger
new member!
Probably easier just to buy a new (used) radio for $30-$50 bucks
Mod note. Jim passed away in early 2022, his contributions to this forum are immortal, and he is missed. RIP

2000 V70R Black, 144,000 miles Wife's R.
2007 V70 2.5T White/Oak 111,000 MILES. Polestar tune, IPD bars, rear spoiler, dark grey Thors, DWS 06, HU850, sub.

turbozutek
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Year and Model: 1995 850 GLE
Location: Glasgow

Post by turbozutek »

Dreamer wrote:That wasn't too bad. Bulb replaced in about 1/2 hour. Unfortunately, the display now has a glitch and displays only parts of the numbers. Live and Learn!
Make sure the LCD is fitting soundly to the board - it should be flush to the contacts.

Chris...

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rspi
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Post by rspi »

I guess I need to take a 3rd look at this display. When I pulled mine apart it looked like I would have to take upwards of 20 small soliders loose to get to the bulb. I'll take one final look at it and see if I can just take the frame loose to get at the bulb.
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BEJinFbk
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Post by BEJinFbk »

Dreamer wrote:That wasn't too bad. Bulb replaced in about 1/2 hour. Unfortunately, the display now has a glitch and displays only parts of the numbers. Live and Learn!
I haven't had this one apart, but most LCDs have a little
"rubber" strips between the panel and the circuit board.
Usually one at the top and one at the bottom.

If you look closely, it's made of alternating black and white "rubber".
The black is conductive and the white isn't, and the sections are a fraction
of the contact width. Usually, each contact connects with several of the
conductive segments, so lateral alignment isn't critical. But be sure that the
strips are "right side up" and you have good alignment along the contacts.
And be sure it's all clean!

Good Luck!
'98 V70 R - Well Equipped for Life Up North... ;)

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