Any luck finding that link, Tom?
Also, if anybody else has any other ideas on how to fix/diagnose the problem, or where to buy parts from, please let me know!
386
Member
Last Activity: 08-09-2012, 07:55 PM
Joined: 07-30-2012
Location: QLD
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Any luck finding that link, Tom?
Also, if anybody else has any other ideas on how to fix/diagnose the problem, or where to buy parts from, please let me know!
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Tom, could you please link me to that part anyway? It's a possibility I guess. Cheers for all your help!...Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
To add an attachment:
Just below the reply section, click "go advanced", then on the next page you will see the section "Additional Options", in that section click "Manage Attachments", this will open an attachments window, browse for your file, then click the Upload button. It will take a little bit of time to upload, then post normally.
Alternatively, you can upload your file to an external third party website, and just share...Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Is the part number the number just below where it says BG1 on the previous photo?
[url]https://dl.dropbox.com/u/51809914/IMG_3742.jpg[/url]Re: Sony Bravia KDL-40D3100 - Doesn'...3742.jpg[/url]Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Not with everything connected/with power on.
Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
I believe the green board in the top right corner to be the tuner. It's labelled DTAU2MB, and the daughter board sitting on top of it is DTAU_FE. One of the first things I tried was powering up the TV with various boards disconnected, all combinations seemed to leave the 8 blink error. Apart from disconnecting the CN4002 connector (on BG1 board), which resulted in the standby LED giving two blinks, which indicates an issue with the 12v power supply, which makes sense. But, apart from that I've been unable...Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Unfortunately it's currently night time here, so it was difficult to get enough light for particularly good photos, but here they are anyway:
[url]https://dl.dropbox.com/u/51809914/Everything%20-%20IMG_3789.jpg[/url]
[url]https://dl.dropbox.com/u/51809914/PSU%20-%20IMG_3790.jpg[/url]
[url]https://dl.dropbox.com/u/51809914/Inverter%20-%20IMG_3794.jpg[/url]
[url]https://dl.dropbox.com/u/51809914/BH%20Board%20-%20IMG_3796.jpg[/url]
[url]https://dl.dropbox.com/u/51809914/Tuner%20-%20IMG_3797.jpg[/url]...Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Wait, does the "BU board" (on page 25) mean the BG1 board? Since I couldn't locate the BU board, I did a google image search for "BU board tv" and nearly all the results seem to be of boards which look like the main BG1 board from this model. In which case where on earth is the CN1001 connector? Is that possibly a typo or from an earlier schematic?
Edit: Yet, it says that the diagram on page 25 is of the BG1 board, and it has the CN2000 connector to the speakers on the...Last edited by 386; 08-02-2012, 05:32 AM.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Yup, still the exact same error.
Also, I just tried disabling pins 5 - 8 on CN4001 (AU_13V and AU_GND), which can be seen on page 34. Just experimenting, it didn't effect the error/behaviour.
I've also noticed on page 25 there's "AU-PROT" on the top right hand side, which is meant to connect to BU board via CN1001? I can't locate the that connector? Am I missing something? Also, sorry if I'm searching totally off track here. Thanks againLeave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Yup, tested and retested with my meter, no signs of any current flow.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
It's pretty embarrassing, it looks like I've totally massacred the board in the photo. I had two attempts to cut the trace, and neither broke the circuit, so I realised I needed to use a lot more force than I was, it was on that third cut that I slipped and hit the transistor. The transistor survived pretty well and can be seen in the photo (below and to the right of where it should be), but I don't think I'll be able to solder something so small with my iron anyway. I did the damage with a less than ideal...Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Damn, I cut that trace, and accidentally knocked Q2017 off the board in the process. I tested the cut trace, no connection left at all. Put the board back in the TV, and still exactly the same behaviour. Any thoughts? Did removing that transistor void our test? I wonder if there's any way we could just bypass the entire audio section? If something like that worked, it'd be okay because I use an external amp/speakers/tuner anyway.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
I know we probably don't really need it any more, but I just got the original PDF of the service manual if you'd like to add it to your database:
You should be able to just right click > save as.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Ok, sorry, it seems I was mistaken. It's reading 750 in the correct direction, and in the opposite direction it quickly jumps to a very brief reading each time I connect it. Is it at all normal to get any reading in the reverse direction? I can record a video later, if it would help. Also, yes multimeter is on diode mode, but I also tried measuring ohms.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
It gives a momentary drop in resistance in one direction (when first connected), only long enough for my multimeter to register one reading, and then it jumps back to infinite. Almost like a small capacitor.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Pardon my ignorance, but how exactly should I be testing the diode? I only get a very brief drop in resistance (when first connecting/reconnecting my probes) in the correct direction of current flow, but then it goes to infinite. However, it always blocks current in the reverse direction, as it should.Last edited by 386; 08-01-2012, 08:53 AM.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Could you please clarify which diode I should test? Also, cheers about the photos, I'm just using an old $100 Canon Ixus, all it takes is a little bit of time and manual settings, haha.
Edit: Oh, sorry, I see the diode now!Last edited by 386; 08-01-2012, 08:48 AM.Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Am I correct in thinking it's the black resistor with the question mark next to it in the attached photo? If so, it's only half a mm in size
....
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
I've tried with the speakers entirely disconnected and reconnected, I also tested the speakers which are functioning correctly. Any other ideas?...Leave a comment:
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Re: Sony Bravia KDL-40D3100 - Doesn't Turn On - Standby Light Blinks 8 Times
Could I possibly break the circuit at an easier location? I don't entirely understand how that circuit works. Are there any other (possibly larger) components/issues I could test for first? I'm not even sure I'll be able to get R2204 off by itself, let alone put one back on, haha.
Thanks heapsLeave a comment:
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