Unusual SMD capacitors in Panasonic VCR - UK Vintage Radio Repair and Restoration Discussion Forum

IanNVJ35 · 8th Oct 2021, 3:50 pm

I'm restoring a Panasonic AG deck with sub par picture quality. Quite grainy and a bit dark. It has what appears to be SMD capacitors on a small sub board in the video section. I have replaced hundreds of these which have failed in the past and as you probably know, Panasonic surface mount capacitors are a real weakness. So I would like to replace them as a starting point.

But I just don't recognise the markings. There are two types. I'm wondering if they are even capacitors at all. 1M0 is 1 mega Ohm in my experience.

As always any help appreciated.

Keith956 · 8th Oct 2021, 3:55 pm

Looks like 47uF and 4.7uF? Take one off and test it?

IanNVJ35 · 8th Oct 2021, 4:03 pm

Quote:

Originally Posted by Keith956

Looks like 47uF and 4.7uF? Take one off and test it?

That's my next step, but not sure what value I'm supposed to be expecting. I'll do that and report.

ms660 · 8th Oct 2021, 4:05 pm

47uF @ 4V

4.7uF @ 25V

According to this (1st page bottom left):

https://industrial.panasonic.com/cdb...A0000C1158.pdf

Lawrence.

IanNVJ35 · 8th Oct 2021, 5:17 pm

Quote:

Originally Posted by ms660

47uF @ 4V

4.7uF @ 25V

According to this (1st page bottom left):

https://industrial.panasonic.com/cdb...A0000C1158.pdf

Lawrence.

Thank you Lawrence. That is a real help and almost impossible to find unless one can find documents like that. So amazing work there and much appreciated.

ms660 · 8th Oct 2021, 5:31 pm

No problem.

Lawrence.

IanNVJ35 · 8th Oct 2021, 6:15 pm

Just to say that I got the old ones off but they did not read any value as the legs had corroded off.

8th Oct 2021, 3:50 pm	#1
IanNVJ35 Heptode Join Date: Mar 2010 Location: Hemel Hempstead, Hertfordshire, UK. Posts: 848	Unusual SMD capacitors in Panasonic VCR I'm restoring a Panasonic AG deck with sub par picture quality. Quite grainy and a bit dark. It has what appears to be SMD capacitors on a small sub board in the video section. I have replaced hundreds of these which have failed in the past and as you probably know, Panasonic surface mount capacitors are a real weakness. So I would like to replace them as a starting point. But I just don't recognise the markings. There are two types. I'm wondering if they are even capacitors at all. 1M0 is 1 mega Ohm in my experience. As always any help appreciated. Attached Thumbnails

8th Oct 2021, 3:55 pm	#2
Keith956 Heptode Join Date: Jun 2019 Location: Oxfordshire Posts: 740	Re: Unusual SMD capacitors in Panasonic VCR Looks like 47uF and 4.7uF? Take one off and test it?

8th Oct 2021, 4:05 pm	#4
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Unusual SMD capacitors in Panasonic VCR 47uF @ 4V 4.7uF @ 25V According to this (1st page bottom left): https://industrial.panasonic.com/cdb...A0000C1158.pdf Lawrence.

8th Oct 2021, 5:31 pm	#6
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Unusual SMD capacitors in Panasonic VCR No problem. Lawrence.

8th Oct 2021, 6:15 pm	#7
IanNVJ35 Heptode Join Date: Mar 2010 Location: Hemel Hempstead, Hertfordshire, UK. Posts: 848	Re: Unusual SMD capacitors in Panasonic VCR Just to say that I got the old ones off but they did not read any value as the legs had corroded off.