Blaupunkt SQR88 Memphis Display Dim - UK Vintage Radio Repair and Restoration Discussion Forum

Blaupunk · 15th Oct 2020, 6:51 pm

The display is dim on my car stereo, looks like the display backlight has blown? How can I fix it? Thanks Mike.

Herald1360 · 16th Oct 2020, 8:36 pm

No idea, but there's a just about legible schematic available from Elektrotanya which shows various filament and LED light sources.

Good luck!

Blaupunk · 19th Oct 2020, 6:58 pm

OK thanks.

Joe_Lorenz · 19th Oct 2020, 9:18 pm

Hello Mike,

I had the same problem on a similar Blaupunkt car radio. I found out that the LED backlight was fully functional but the LCD kept "black in black". Removed it and cleaned the conductor rubber stripes with little success.
Whilst scratching my head I realized that on ebay the same model was offered, new in the box for 40 Euros. No question, the NOS radio is in my "Magic Bus" now and the defective one is on the "To do - some day"-pile.

Regards, Joe

Blaupunk · 16th Nov 2020, 11:59 am

That's cheap? Got any more?

15th Oct 2020, 6:51 pm	#1
Blaupunk Triode Join Date: Oct 2020 Location: Wigan, Greater Manchester, UK. Posts: 10	Blaupunkt SQR88 Memphis Display Dim The display is dim on my car stereo, looks like the display backlight has blown? How can I fix it? Thanks Mike.

16th Oct 2020, 8:36 pm	#2
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: Blaupunkt SQR88 Memphis Display Dim No idea, but there's a just about legible schematic available from Elektrotanya which shows various filament and LED light sources. Good luck! __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

19th Oct 2020, 6:58 pm	#3
Blaupunk Triode Join Date: Oct 2020 Location: Wigan, Greater Manchester, UK. Posts: 10	Re: Blaupunkt SQR88 Memphis Display Dim OK thanks.

19th Oct 2020, 9:18 pm	#4
Joe_Lorenz Hexode Join Date: Dec 2019 Location: Hohenroda, Eastern Hesse, Germany Posts: 461	Re: Blaupunkt SQR88 Memphis Display Dim Hello Mike, I had the same problem on a similar Blaupunkt car radio. I found out that the LED backlight was fully functional but the LCD kept "black in black". Removed it and cleaned the conductor rubber stripes with little success. Whilst scratching my head I realized that on ebay the same model was offered, new in the box for 40 Euros. No question, the NOS radio is in my "Magic Bus" now and the defective one is on the "To do - some day"-pile. Regards, Joe

16th Nov 2020, 11:59 am	#5
Blaupunk Triode Join Date: Oct 2020 Location: Wigan, Greater Manchester, UK. Posts: 10	Re: Blaupunkt SQR88 Memphis Display Dim That's cheap? Got any more?