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Old 10th April 2013, 02:32 PM   #21
dazzz is offline dazzz  Israel
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This circuit stereo
Look at the FL FR C channel
They go to another card
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Old 10th April 2013, 02:38 PM   #22
dazzz is offline dazzz  Israel
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This specification of the DVD

The main system unit also contains the audio circuitry for the centre, subwoofer
and surround channels, based on two Texas Instruments/Burr Brown PCM1796 chips (each chip operating in stereo or dual channel mode), eight 2068D op amp chips plus an assortment of fairly high quality capacitors. I also noticed two oscillators, operating at 24.576MHz and 18.75MHz.

On top of this board, completely enclosed by metal shielding to protect the audio circuits, is a separate board for the FireWire interface. The design is based on a Bridgeco L5A9625 processor and is separately clocked using 22.579MHz and 24.576MHz oscillators.

The third board stacked topmost is a dedicated board for the audio front left/right channels. Here we find another two PCM1796 plus no less than ten 2068D op amps and accompanying capacitors. The Denon literature implies that one PCM1796 is used for the dedicated stereo left/right outputs (containing a downmixed signal for multi-channel sources) and the other is used for the front left/right channels forming part of the analogue 5.1 outputs.

In 3910 my brother has a total of 18 2068D OPAMP
on different audio circuit 10 on Sketch 14 and 8 mor on Sketch 7

Last edited by dazzz; 10th April 2013 at 02:46 PM.
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Old 10th April 2013, 02:39 PM   #23
Ryssen is offline Ryssen  Sweden
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Well then It must be IC307-310 you should change.
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Old 10th April 2013, 02:54 PM   #24
dazzz is offline dazzz  Israel
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SL. SR .C OPAMPS -Sketch 7
IC223 IC224 IC227 IC228
IC225 IC226 IC229 IC230

FL FR CHANEL OPAMPS- Sketch14
IC301.IC302.IC303.IC304.IC305.
IC306.IC307.IC308.IC309.IC310
Attached Images
File Type: jpg DSC_0115.jpg (942.9 KB, 47 views)
File Type: jpg DSC_0114.jpg (1,006.2 KB, 44 views)
Attached Files
File Type: zip DVD DENON 3910 SR. SL. C UNIT 7.zip (264.3 KB, 3 views)
File Type: zip DVD DENON 3910 STEREO UNIT 14.zip (360.3 KB, 5 views)

Last edited by dazzz; 10th April 2013 at 03:08 PM.
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Old 10th April 2013, 03:13 PM   #25
Ryssen is offline Ryssen  Sweden
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Quote:
SL. SR .C OPAMPS -Sketch 7
IC223 IC224 IC227 IC228
IC225 IC226 IC229 IC230
FL FR CHANEL OPAMPS- Sketch14
IC301.IC302.IC303.IC304.IC305.
IC306.IC307.IC308.IC309.IC310
Well you can change all of them,but If I where to only use the FL,FR output I would only change the IC307-310.
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Old 12th April 2013, 04:05 PM   #26
dazzz is offline dazzz  Israel
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Today I opened the My DVD 3910
And I took with my camera CANON 5D
Few photos Something strange -the op amps
IC306.IC307.IC308.IC309.IC310
Instead 2068D Write on them 15218/5808
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File Type: jpg _MG_7418 4.jpg (468.4 KB, 45 views)
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Old 12th April 2013, 04:39 PM   #27
Ryssen is offline Ryssen  Sweden
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http://www.google.se/url?sa=t&rct=j&...C4GjKtF_3E4Otg
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Old 12th April 2013, 04:57 PM   #28
dazzz is offline dazzz  Israel
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Strange that SERVICE MANUAL
Write supposed to be there 2068D
Can I change them DA8620 ?
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Old 12th April 2013, 06:19 PM   #29
Ryssen is offline Ryssen  Sweden
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DA8620 is some kind of displaydriver,that one you can´t use..

AD8620 on the other hand u can use.
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Last edited by Ryssen; 12th April 2013 at 06:23 PM.
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Old 12th April 2013, 06:33 PM   #30
dazzz is offline dazzz  Israel
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bro what is the best dual op amp you recomend my
I'm really confused wide selection ???

And today I opened device are very small
You recommend using hot air gun ?

Surface Mount IC - YouTube
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