Beo vision mk2 7-40 samsung insides back light on screen but no picture
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Last edited by adamp91gvm; 01-27-2014, 01:48 PM. -
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 -
Re: reward for anyone one who fixes this bang and olfsen
I have been doing it but this tv has 10 boards in total !!! Turned on watchin went to black screen with back lightComment
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Re: reward for anyone one who fixes this bang and olfsen
Anyone see any fuses on here ?Attached FilesComment
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Re: reward for anyone one who fixes this bang and olfsen
What is this ? I'm getting power to one side and nothing to the other on the other side of this board is the wire that goes to the control board bellow the 270Attached FilesComment
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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!Comment
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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!Comment
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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 sideAttached FilesLast edited by adamp91gvm; 01-27-2014, 03:59 PM.Comment
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Re: reward for anyone one who fixes this bang and olfsen
useless without a pinout i would of thought, just random numbers without knowing what they are for and where they lead to and whats abnormal and normal etc
try disconnecting main board see if voltages rise etc etcComment
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Re: reward for anyone one who fixes this bang and olfsen
I know that's where I'm gettin stuck can not find anything on line about them all I know is most of boards and screen is samsungComment
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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=39740Comment
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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.Comment
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Re: reward for anyone one who fixes this bang and olfsen
Where is the fuse on this t con ?Attached FilesComment
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Re: reward for anyone one who fixes this bang and olfsen
This with the p on im getting 5.13v into it but only 0.10v outAttached FilesComment
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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.Comment
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Re: reward for anyone one who fixes this bang and olfsen
Remember the fuses on the panasonic are these the same ?Comment
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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.Comment
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Re: reward for anyone one who fixes this bang and olfsen
My friend u have won the reward booted up perfect inbox me your pay pal I want to get u a drink on me thank youComment
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I every one!!
I have a Bang & Olufsen Beovision Horizon that is always in standby mode ( green light on ).
Main board is 715g7132-m0h-000-005k. Corrupted firmware? I have all the ok voltages in psu.
Any idea?
Thank's...
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Hi.
BacCaps forum is awesome - thank YOU ALL for sharing knowledge!
This is about DONG YANG PSU BN44-00195A failiure in Samsung 245BPLUS. It started with bang and smoke from the back of LCD. Downloaded diagram BM44-00192A - a bit different but I will use all parts names from this diagram [and real PSU].
BIG CAP CP801 had 315V, on standby pin 5,2V. After shorting S_B ON (through 3,3k ohm resistor) 24V and 5,3V were missing, on CP801 was 312V.
RM801 [real PSU: RM801 - 0,22 ohm 1W] - FAIL
burned, measured 10M ohm.
QM801 [real PSU:... -
I'm about to take a journey into repairing this 3 Channel ICE amp. It's got a bunch of fun components I am not familiar with like Direct Stream Digital chips. It also has some onboard Digital Signal Processor which I haven't identified yet.
I am not familiar with ICE amp circuits other than they are a type of PWM amplifier so I'm assuming they require a ton of high frequency filtering on the output. I'm also assuming that the output of the DSD chips probably directly feed the ICE amp signal since DSD is also essentially PWM or creating an averaged AC signal using high frequency ~2MHz... -
Hi guys
I have a B&O Omen laptop here. It has very specific fault symptoms, hopefully someone can give me some guidance
If I plug in a known good 180W third party charger the little LED next to the power jack on the laptop flashes red once, but the laptop will not start. It will not flash red again unless you unplug and reconnect the power.
If I remove the main battery (I can't see a cmos battery) then the led by the jack does not flash when I plug in the adapter, but if I press the power on button with adapter attached it flashes once white every time... -
greetings from Westport CT.
I have recently purchased a circa 1986 beosystem 3300.
it worked gloriously for a few hours. then no sound and smell of burnt electronics from the beomaster 3300 amp model: 2953
attached is a bit of the schematic, I have the full pdf schematic if needed.
all, functions aside from sound output seem to still work on the unit. (cd/tape/phono change, display volume display, remote control, radio station, on off etc.
I'm pretty sure the smell was from resistor edit[r122] burning up. (see picture)
I will replace the...
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