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Old 17th September 2013, 02:58 PM   #151
dazzz is offline dazzz  Israel
diyAudio Member
 
Join Date: Apr 2013
I finished the project on DENON DVD 3910

I changed in the audio circuit the Output Capacitors 100UF
To
VISHAY ROEDERSTEIN - MKT1813
10UF 250V

and the input capacitor audio circuit
470UF 16V
100UF 16V -3 CAPS
TO
RUBYCON - 35ZLH470MEFC10X16- 470UF

THE 3 CAP 100UF
TO

PANASONIC - EEUFR1J151L - CAPACITOR, 150UF, 63V, 8X20MM
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Old 20th September 2013, 11:48 AM   #152
dazzz is offline dazzz  Israel
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more photo
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Old 20th September 2013, 01:39 PM   #153
Ryssen is offline Ryssen  Sweden
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Location: Sweden--> Here
Nice,is it working fine?
__________________
Regards ke
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Old 20th September 2013, 03:41 PM   #154
dazzz is offline dazzz  Israel
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Join Date: Apr 2013
Quote:
Originally Posted by Ryssen View Post
Nice,is it working fine?


Works perfect
Start the sound of the VISHAY ROEDERSTEIN - MKT1813 -10UF 250V
was harsh.
After a run of 50 hours
The sound has changed
I really like the color tone of the high frequencies
They are really accurate sound and Neutrals
It reminds me of the sound of my CD ARCAM CD192
In short very recommended capacitor
I'm going in the future in all my project to use them

Last edited by dazzz; 20th September 2013 at 03:44 PM.
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Old 21st September 2013, 09:47 AM   #155
dazzz is offline dazzz  Israel
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Join Date: Apr 2013
I made another change to the audio circuit

i removed the 2 film capacitorsc 359.c357 parallel to the capacitors
MKT 1813 10UF 250V c361.c363


Remove on every route1 resistors 150 OHM R352.R355
( There are 2 150 ohm resistors in each route )
And bridged Where was then the resistors
With copper wire of NEOTECH 3001

Most importantly I took off the 4 mute transistors
TR303
TR304
TR305
TR306

The last two transistors that followed TR307.TR308
I did not remove
They function as a 0 digital mute
somebody knows what that means?
And is well worth it to remove them ?

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Old 23rd September 2013, 02:10 PM   #156
dazzz is offline dazzz  Israel
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Join Date: Apr 2013
i install on all the cable runs from the power supply
EMI filter
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Old 5th January 2014, 06:44 PM   #157
dazzz is offline dazzz  Israel
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I made other improvements to the power supply of the
DENON DVD 3910

Film capacitors in the power supply changed to
VISHAY 1837MKP
0.1UF
470PF

The resistors have been replaced by
VISHAY DALE METAL FILM RESISTOR

And most importantly
I increased the value of the filter capacitors of regulators
9 -
9 +

From 10UF
To 100UF
Of
RUBYCON ZLH 100UF 100V


Audio circuit

I replaced all the CF resistors
To
VISHAY DALE METAL FILM RESISTOR
And to all op amp
I added a film capacitors 0.1UF of VISHAY 1837MKP
From 4 leg to 8 leg

Voltage power lines that provide audio circuit i add ferrite filter
Of
WURTH ELEKTRONIK - 74272733 - FERRITE CORE, SPLIT, 8MM, 30MHZ

Frequency Min 150kHz
Frequency Max 30MHz

Attached Images
File Type: jpg IMG_0435.jpg (824.3 KB, 6 views)
File Type: jpg IMG_0431.jpg (618.5 KB, 6 views)
File Type: jpg IMG_0432.jpg (622.9 KB, 4 views)

Last edited by dazzz; 5th January 2014 at 07:11 PM.
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Old 6th January 2014, 01:17 PM   #158
dazzz is offline dazzz  Israel
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Join Date: Apr 2013
more photo
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Old 7th January 2014, 04:07 PM   #159
dazzz is offline dazzz  Israel
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Join Date: Apr 2013
CAPACITOR TEST SHOT

Today I managed to assemble the electrolytic capacitor of
epcoc 100uf 400v

in the smps of the denon 3910

EPCOS - B43504A9107M - CAPACITOR, 100UF, 400V

EPCOS - B43504 Series
Capacitance 100F
Capacitance Tolerance 20%
Voltage Rating 400V
Diameter 22mm
ESR 0.88ohm
Height 35mm
Lead Spacing
10mm
Life Time @ Temperature 3000 hours @
External Length / Height 35mm
Impedance 1090mohm
Operating Lifetime 2000h
Operating Temperature Range -40C to +105C
Ripple Current AC 0.64A
Ripple Current Temperature 105C Tolerance
+
20% Tolerance - 20% Voltage Rating V DC 400V
Instead of the

RUBYCON - 400CXW100MEFC14.5X40 - CAPACITOR, 100UF, 400V, 20%, 14.5X40MM


had to be creative to form a capacitor with a diameter of 22 mm
Area of ​​16 mm

1) Reshaped the legs of one of the bridge diodes Diodes FRED
2) And redesigned the legs of 200K resistor


After the burn in will judge the differences between them

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Last edited by dazzz; 7th January 2014 at 04:11 PM.
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Old 11th January 2014, 10:07 AM   #160
dazzz is offline dazzz  Israel
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Join Date: Apr 2013
Project roadmap

This week
in the
smps

Replacing two of safety capacitors
0.1UF
Capacitors of

Mundorf MCap SUPREME 0,1 uF 1400V

All resistors CF
Will be Replaced
To METAL FILM RESISTORS

R-909 WELWYN - MFP2-220K JI - RESISTOR, 2W 5% 220K

R-923 . R-941 WELWYN - MFP2-680R JI - RESISTOR, 2W 5% 680R

R-922 . R-917 WELWYN - PR5Y-47KBI - RESISTOR, 47K, 0.5W, 0.1%, 15PPM

R-938 TE CONNECTIVITY - LR1F270R - RESISTOR, METAL , 270R, 0.6W, 1%

R-905
WELWYN - MFP1-6K8 JI - RESISTOR, 1W 5% 6K8

R-911 . R-936 WELWYN - PR5Y-100KBI - RESISTOR, 100K, 0.5W, 0.1%, 15PPM

R-913 TE CONNECTIVITY - LR1F1K8 - RESISTOR, METAL , 1K8, 0.6W, 1%

R-915 WELWYN - MFP1-10K JI - RESISTOR, 1W 5% 10K


R-917 WELWYN - PR5Y-47KBI - RESISTOR, 47K, 0.5W, 0.1%, 15PPM

R-928 . R-920 WELWYN - MFP2-560R JI - RESISTOR, 2W 5% 560R

R-908 TE CONNECTIVITY - LR1F56K - RESISTOR, METAL , 56K, 0.6W, 1%


R-945 PANASONIC - ERX5SJR47 - RESISTOR METAL FILM, 0.47 OHM, 5%, AXIAL



Audio circuit
I will replace the capacitors 10UF

VISHAY 1813MKT 10UF
I installed the previous time
to the Capacitors of

MUNDORF MCAP-EVO OIL 10f 450V
Attached Images
File Type: jpg 0.1mundorf.JPG (24.9 KB, 5 views)
File Type: jpg evo_oil.jpg (8.0 KB, 4 views)

Last edited by dazzz; 11th January 2014 at 10:35 AM.
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