my dvd denon 2900 mod dazzz style :)

[dazzz]

sorry, rereading I see all your descriptions through the posts of how the sound changed. My only concern is on the old threads everyone seems to have trouble with popping noises after removing the output transistors - have you noticed this?

The 2 denons 2900-3910 sounds great

I've moved to another project
on My ARCAM FMJ 32 amp
There is no shortage of problems for me 🙁

Trust me on DAC
It is much easier to work

 

[dazzz]

Mundorf MCap SUPREME 0,1 uF 1400V

and

Mundorf MCap SUPREME 0,33 uF 1400V

for my 2 denon project

 

[dazzz]

I finished building the power supply of DVD DENON 2900
I replaced the two safety capacitor
0.1UF
0.22UF
to
Capacitors of MUNDORF SUPRIM 0.33UF
All resistors in the CF
Replaced with METAL FILM resistors 😉

 

[dazzz]

part list

ALL CF RESISTOR Replaced with

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

TE CONNECTIVITY - LR1F15K - RESISTOR, METAL , 15K, 0.6W, 1%

WELWYN - MFP1-470R JI - RESISTOR, 1W 5% 470R

WELWYN - PR5Y-3K3BI - RESISTOR, 3K3, 0.5W, 0.1%, 15PPM

WELWYN - PR5Y-2K2BI - RESISTOR, 2K2, 0.5W, 0.1%, 15PPM

TE CONNECTIVITY - LR1F22R - RESISTOR, METAL , 22R, 0.6W, 1%

WELWYN - MFP2-47R JI - RESISTOR, 2W 5% 47R

VISHAY BC COMPONENTS - 5093NW68K00J - METAL FILM RESISTOR 3W

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

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

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

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

I increased the value
Two filtering capacitors of regulators
9+
9-
from 220UF
TO
1000UF
RUBYCON - 25ZLH1000MEFC10X23 - CAP, ALU ELECT, 1000UF, 25V, CAN

film capacitor 470pf
Replaced

VISHAY ROEDERSTEIN - KP1830147631 - CAP, FILM, PP, 470PF, 630V

film capacitor 2200pf
Replaced
LCR COMPONENTS - PC/HV/S/WF 2.2NF 1KV - CAP, FILM, PP, 2.2NF, 1KV, AXIAL

film capacitor 220pf
Replaced
WIMA - FKP1T002204B00KSSD - CAP, FILM, PP, 220PF, 1.6KV, RAD

 

[dazzz]

This is the final finished project on DVD DENON 2900
After yesterday I finished the power supply

Today also I changed the audio circuit to the internal wiring
Auric Hook-Up wire 18AWG, stranded copper (made in USA) - Red

(Yellow wiring point to point Made from NEOTECH 3001 cable)

 

[arc diver]

Beautiful job. I sent you a PM about looking to do some mods to a 2910. Not sure if your part's list would be viable.

 

[dazzz]

Beautiful job. I sent you a PM about looking to do some mods to a 2910. Not sure if your part's list would be viable.

Thanks bro
I answered you a private message 🙄

 

[dazzz]

I finished
The project on the power supply of the DENON DVD 2900
Looks good
And sounds great

MY 2 DIY PROJECT DENON 2900 AND ARCAM FMJ32 AMP ROCK ON - YouTube

 

[dazzz]

One of the best improvements I made to the power supply of my
denon dvd 2900

The regulators
7805
7809
7905

Switching Regulators LDO
LM2900T
LM2940T

To Everything work properly I had to make changes to components such as input and output capacitors

LM2900 regulator negative voltage 5 V
in the output of the regulator
i left the 100UF RUBYCON ZLH
in the LM2900M
There is only a requirement that the ESR does not exceed 10 ohm

At the input to the LM2900
I changed the SMD capacitor
0.1UF

to Electrolytic capacitor RUBYCON of ZLH 22UF 50V

Polarity
( - ) Input regulator

( + )
Ground

LM2940T regulator
9 +
5 +
in the 9 +
I replaced the capacitor RUBYCON ZLH 1000UF
its ESR too low.
Is replaced by a capacitor of 100V 100UF RUBYCON ZLH
ESR fits that criteria
ESR = 110Mohm

in the SMD output
0.1UF
Replaced to get film of EVOX
470NF
5 + voltage do the same

The previous Hdiodotbfam bridge I put diodes T0220
FRED

Now been replaced by the more advanced generation
HEXFRED

A huge difference in sound much cleaner and detailed
And timing improved a lot
Really great regulators i recommended

 

[ulubiony]

dlaczego tylko 4 operacyjne sa bypas na zdjeciu .na plycie jest 10 ?

 

[Mooly]

dlaczego tylko 4 operacyjne sa bypas na zdjeciu .na plycie jest 10 ?

English please 🙂 RULES

why only 4 are operational in the picture disc on bypass is 10?

 

[dazzz]

dlaczego tylko 4 operacyjne sa bypas na zdjeciu .na plycie jest 10 ?

Even with translations into English I did not understand exactly what you mean 🙄

 

[ulubiony]

na zdjeciu jest tylko 4 opa 1662 z bypassami /vishay 1830 / .denon ma 10 takich opa ,...

 

[dazzz]

na zdjeciu jest tylko 4 opa 1662 z bypassami /vishay 1830 / .denon ma 10 takich opa ,...

I replaced all of the OP AMP
LM4562 in the I / V
OPA1662 in the high frequencies filter
AD826 in the BUFFER

you not see the all the filter capacitors
Because
That I did not photograph it
before I put All of them in the ciruit 😉

I made a lot of changes in the DENON 2900
thet i not shoot 😉

 

[ulubiony]

denon 2900

dziekuje za informacje 🙂

 

[Mooly]

dziekuje za informacje 🙂

Thank you for the information

*************************************************************


Angielski, proszę tylko.

 

[dazzz]

Thank you for the information

*************************************************************


Angielski, proszę tylko.

mooly
I know to use GOOGLE TRANSLATE 😉 ...lol

By the way Question bro
I now order tantalum capacitors
For voltage regulators
LM2900
LM2940
With ESR 1.3 OHM
There is a brand you recommend

 

[ishiru]

dazzz, why would you use a high ESR caps?..and i would prefer to not to remove the SMD on the power supply. 🙂

 

[dazzz]

dazzz, why would you use a high ESR caps?..and i would prefer to not to remove the SMD on the power supply. 🙂

Because of LDO Voltage Regulators
Need a stable ESR at high frequencies to avoid oscillations
all ldo regulator has a limit
Minimal and maximal
Of ESR
Tntlium capacitor has stable ESR and because it
thay used in LDO voltage regulators

 

[ishiru]

ah..i see..that's what i don't know and should know.thanks!