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tech / sci.electronics.repair / Canon Vixia HF R400 camcorder - black screen LCD

SubjectAuthor
* Canon Vixia HF R400 camcorder - black screen LCDFred
`* Canon Vixia HF R400 camcorder - black screen LCDabrsvc
 `* Canon Vixia HF R400 camcorder - black screen LCDFred
  `* Canon Vixia HF R400 camcorder - black screen LCDFred
   `- Canon Vixia HF R400 camcorder - black screen LCDabrsvc

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Canon Vixia HF R400 camcorder - black screen LCD

<20230203-054236.488.0@Fred.ssl-us.astraweb.com>

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Newsgroups: sci.electronics.repair
Subject: Canon Vixia HF R400 camcorder - black screen LCD
From: fred@farkle.com (Fred)
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 by: Fred - Fri, 3 Feb 2023 05:42 UTC

This camera has one of those rotating displays so you can see it from the
front of the camera. The display was working fine, then just died. No
light at all. I tried the flashlight test to see if it was just the
backlight, but there's nothing visible. However, the camera seems to boot
up, and if I connect an HDMI cable, I get video. So apparently the camera
is still working ok except for the LCD display.

I found a couple disassembly videos on Youtube, and thought I would take it
apart to see if perhaps a ribbon cable has come loose, or if the switch
that tells the camera that the display door is open isn't working. But
before undertaking that, I wanted to see if anyone here has a suggestion
for a simpler solution. I guess the problem could also be in the pivot
connections, but if that's the case there's nothing I could fix there.

Re: Canon Vixia HF R400 camcorder - black screen LCD

<ba441d3d-e47a-40f4-8317-6f82609766c0n@googlegroups.com>

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Date: Fri, 3 Feb 2023 10:00:34 -0800 (PST)
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Subject: Re: Canon Vixia HF R400 camcorder - black screen LCD
From: dansabrservices@yahoo.com (abrsvc)
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 by: abrsvc - Fri, 3 Feb 2023 18:00 UTC

On Friday, February 3, 2023 at 12:42:42 AM UTC-5, Fred wrote:
> This camera has one of those rotating displays so you can see it from the
> front of the camera. The display was working fine, then just died. No
> light at all. I tried the flashlight test to see if it was just the
> backlight, but there's nothing visible. However, the camera seems to boot
> up, and if I connect an HDMI cable, I get video. So apparently the camera
> is still working ok except for the LCD display.
>
> I found a couple disassembly videos on Youtube, and thought I would take it
> apart to see if perhaps a ribbon cable has come loose, or if the switch
> that tells the camera that the display door is open isn't working. But
> before undertaking that, I wanted to see if anyone here has a suggestion
> for a simpler solution. I guess the problem could also be in the pivot
> connections, but if that's the case there's nothing I could fix there.
You have identified the two most common failures for these units. The ribbon cable is the more likely.
Being a Canon, you are not likely to find a replacement cable.

Dan

Re: Canon Vixia HF R400 camcorder - black screen LCD

<20230203-223415.522.0@Fred.ssl-us.astraweb.com>

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Newsgroups: sci.electronics.repair
Subject: Re: Canon Vixia HF R400 camcorder - black screen LCD
From: fred@farkle.com (Fred)
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 by: Fred - Fri, 3 Feb 2023 22:34 UTC

> abrsvc says...

> You have identified the two most common failures for
> these units. The ribbon cable is the more likely. Being
> a Canon, you are not likely to find a replacement cable.

Thanks. Yesh, I'm hoping it's just that the ribbon cable
has come loose. Well, it's an old camera, so I may need to
get a new one. But I think it's worth the effort to try to
fix it. I don't think it would make sense to send it to
Canon for repair, but I'll check with them if I have no
luck.

Re: Canon Vixia HF R400 camcorder - black screen LCD

<20230205-213108.86.0@Fred.ssl-us.astraweb.com>

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Newsgroups: sci.electronics.repair
Subject: Re: Canon Vixia HF R400 camcorder - black screen LCD
From: fred@farkle.com (Fred)
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 by: Fred - Sun, 5 Feb 2023 21:31 UTC

Fred says...
> > abrsvc says...
>
> > You have identified the two most common failures for
> > these units. The ribbon cable is the more likely. Being
> > a Canon, you are not likely to find a replacement cable.
>
>Thanks. Yesh, I'm hoping it's just that the ribbon cable
>has come loose. Well, it's an old camera, so I may need to
>get a new one. But I think it's worth the effort to try to
>fix it. I don't think it would make sense to send it to
>Canon for repair, but I'll check with them if I have no
>luck.

I was able to disassemble the camera, reseat the ribbon cable,
confirm that the switch is working, and reassemble everything.
But nothing has changed, The LCD is still dead. So it may be
some problem on the main board. I would have no way to fix that,
even assuming I could identify the exact problem. So I'll
probably look for a used replacement for the camcorder.

Re: Canon Vixia HF R400 camcorder - black screen LCD

<d878edbd-d0e4-49ba-b4cf-0b1bd44d058fn@googlegroups.com>

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Subject: Re: Canon Vixia HF R400 camcorder - black screen LCD
From: dansabrservices@yahoo.com (abrsvc)
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 by: abrsvc - Mon, 6 Feb 2023 15:57 UTC

On Sunday, February 5, 2023 at 4:31:13 PM UTC-5, Fred wrote:
> Fred says...
> > > abrsvc says...
> >
> > > You have identified the two most common failures for
> > > these units. The ribbon cable is the more likely. Being
> > > a Canon, you are not likely to find a replacement cable.
> >
> >Thanks. Yesh, I'm hoping it's just that the ribbon cable
> >has come loose. Well, it's an old camera, so I may need to
> >get a new one. But I think it's worth the effort to try to
> >fix it. I don't think it would make sense to send it to
> >Canon for repair, but I'll check with them if I have no
> >luck.
> I was able to disassemble the camera, reseat the ribbon cable,
> confirm that the switch is working, and reassemble everything.
> But nothing has changed, The LCD is still dead. So it may be
> some problem on the main board. I would have no way to fix that,
> even assuming I could identify the exact problem. So I'll
> probably look for a used replacement for the camcorder.

Look at the ribbon cable carefully with magnification. The problems with these is not that the cable gets loose but that there are small cracks in the cable itself.
It is possible that there is a problem with the board as well. Look for small SMD caps that may have leaked in the area. These too can cause problems of various types in cameras of that age.

Dan

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