Beo vision mk2 7-40 samsung insides back light on screen but no picture
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reward for anyone one who fixes this bang and olfsen
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reward for anyone one who fixes this bang and olfsen
Last edited by adamp91gvm; 01-27-2014, 01:48 PM.Tags: None
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Re: reward for anyone one who fixes this bang and olfsen
You have had enough posts now to know we are lost without pictures.- Bit like the tv!
Moreover you have been through many tests with Tom - so rather than us wheedle each step why not do some basic testing or if you have already done it tell us what you find/found. From what you say it could be power supply, main board, Tcon, cables.
What is the history of the set - died in action - found in a bin?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740
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Re: reward for anyone one who fixes this bang and olfsen
Err--What part you on about!
There's like, maybe 50 in that picture.....TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!
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Re: reward for anyone one who fixes this bang and olfsen
Think you need to start at first principles. Check PSU supplies, M.B. rails then get the scope out, check the LVDS etc and supplies to T-Con....
With the fault you have and the description you have given--could be anything!TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!
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Re: reward for anyone one who fixes this bang and olfsen
Power from the main power board to the av board is
Left pins
1-14.24v
2-14.24v
3 - 0v
4 -0v
5-14.24v
6- 0v
7- 4.83v
8- 0v
9- 14.24v
10-14.24v
11-4.97v
12- 0v
Right side
1-0v
2-0v
3-3.9v
4-5.06v
5-14.24v
6-14.24v
7-40
8-4.51v
9 - 0v
10-0v
11-4.97v
12-0v
And see the pic attached screw driver one left sideLast edited by adamp91gvm; 01-27-2014, 03:59 PM.
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Re: reward for anyone one who fixes this bang and olfsen
Originally posted by adamp91gvm View PostPower from the main power board to the av board is
Left pins
1-14.24v
2-14.24v
3 - 0v
4 -0v
5-14.24v
6- 0v
7- 4.83v
8- 0v
9- 14.24v
10-14.24v
11-4.97v
12- 0v
Right side
1-0v
2-0v
3-3.9v
4-5.06v
5-14.24v
6-14.24v
7-40
8-4.51v
9 - 0v
10-0v
11-4.97v
12-0v
And see the pic attached screw driver one left side
try disconnecting main board see if voltages rise etc etc
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Re: reward for anyone one who fixes this bang and olfsen
In Pic 3 in the first group of 4 - on the left hand side just to the left of the group of
red cable connectors there looks to be a red barrel fuse - is it - and if it is test it.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740
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Re: reward for anyone one who fixes this bang and olfsen
When you say "you get power to one side" you need to clarify. A voltage on one end, wrt (with respect to) ground, is not necessarily "power" on one side. Is that what you mean? Plenty of components act like that, typically, they are parallel parts. It is not necessarily a fault.
Have you checked the fuse on the t-con board and the voltage at both ends of that fuse?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: reward for anyone one who fixes this bang and olfsen
Originally posted by selldoor View PostIn Pic 3 in the first group of 4 - on the left hand side just to the left of the group of
red cable connectors there looks to be a red barrel fuse - is it - and if it is test it.
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Re: reward for anyone one who fixes this bang and olfsen
The "P" is a fuse. It commonly blows on these sets, so you can try replacing it.
T-con fuse is first place to check when no picture with backlight symptom is presented.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: reward for anyone one who fixes this bang and olfsen
Different, but as a quick test (and ONLY as a test) you could use it.
For full repair replace with 3A 32V (or higher) 0603 type fuse, e.x.
http://cpc.farnell.com/multicomp/mc0...20This%20RangePlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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