BeoMaster 3500: touch panel malfunction

4 replies
KolfMAKER
KolfMAKER
Bronze
573 posts
Posted October 8, 2020 at 19:46 GMT
#2145225

I have a BeoMaster 3500 on which the last 4 touch buttons on the right don’t work.
I checked them also by detaching the glass, and touching the rubber tips.
All buttons work, except the last 4 on the right.

Any suggestion is welcome.

Location: The Netherlands

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T(
techhn (archived2)
Bronze
38 posts
Posted October 9, 2020 at 11:19 GMT
#2145226

Hi.

Contact "Dillen".

DI
Dillen
BronzeModeratorFounder
12777 posts
Posted October 11, 2020 at 07:12 GMT
#2145227

The four rightmost touchpads (7,8,9,st.by) are in the same group = sounds like a strobe problem.
Check TR1, TR2, TR3, TR4 and IC1.

Martin

KolfMAKER
KolfMAKER
Bronze
573 posts
Posted October 17, 2020 at 13:14 GMT
#2145228

Thanks Martin!

I have been able to get a defect BM3500 unit, but with working touch panel PCB, including all the 4 pieces of plastic brackets.
So I have a working unit now, perfect! 

To finish this repair, I need to put in new double sided tape. I have two questions about that:

  1. I believe the double sided tape has to be put both on the plastic brackets, as well as on the under side of the glass panel. Is that correct?
  2. I can image that the type of tape matters (stickiness, thickness, etc.). Which tape should I use?

 

Location: The Netherlands

My B&O Icons:

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Beovox.png Beovox.png
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