Lan dm500

[adi sony]

Salut,poate voi putea gasi rezolvarea la o problema legata de conectarea dm-ului 500 la ruter sau programele aferente receptorului.
Cum se manifesta,pe oricare din imaginile puse ,configurarile facute la ip,cand se conecteaza ,cand nu ,ruterul il vede ca device cu macul aferent ,dar inactiv ,cand se conecteaza totul e ok ,dar nu pentru mult timp ,eu suspectez integraul de Lan ,dar inainte de al inlocui ,intreb si aici ,poate unul din colegi sa mai lovit de aceasta problema .

[malefycu]

Aceeasi problema mi s-a intamplat si mie dar cu PC-ul care cand avea net cand nu,am sunat si la operatorul de net sa-i injur,dar problema era de la routerul meu mai exact portul in care era cablul utp era busit se mai intampla la caderi puternice de curent asa am auzit.
Incearca sa muti si cablul in alt port lan poate e de acolo.

[adi sony]

Cablul e ok ,porturile la fel ,testat si pe alte rutere .

[guzy]

Asa cum spui poate sa fie de la integratul de lan de la dream, dar poate sa fie si de la router.
Am avut aceias problema la un prieten, daca aducea la mine dreamul mergea ok, la el acasa cind mergea , cind nu , indiferent in ce port al routerului il folosea, pina la urma a mai pus un swits intre router si dream , cablul utp intre swits si dream este doar de citva cm , si asa merge bine.

[adi sony]

Am modem Thomson 516v6 si swich zyxel ,nu stiu ce sa spun ,imi este ca daca schimb integratul si face la fel e nasol

[guzy]

Incearca direct din modemul adsl , nu stiu ce model de swits zyxel ai ,dar
daca ie de acela de 5 porturi fara menegiment ?, am avut citeva la serviciu si nu prea au fost fiabile.

[Snow]

am patit si eu cu unul, nu vroia sa mearga cu un ruter insa cu altele mergea fara problema.

ps: adi citeste regula 12, nu de alta dar pare intentionat

[laleauaneagra]

si eu cred ca de la router,am avut si am inca asemenea probleme cu 3 tipuri de router ce i drept nu sant de firma dar hai sa fim totusi seriosi e o nenorocita de iesire pe port chiar trebuie sa cumpar ultima aparitie de router?dar asta e alta prob asta e,deci zic ca routeru insa precum ai mai citit si pe aici sant alti la care le merge brici cu ce stiu eu ce no name de router

[adi sony]

The Slow Network Issue
The Problem:
The DM500 is not particulary famous for it's recording and playback abilities on an
external mounted harddisk so don't expect miracles. But this doesn't mean it isn't
possible to record and playback your favorite show. Always bare in mind that sending
a high bitrate DVB stream over your network places a high demand on your network infrastructure.
This has to be in a perfect condition for recording to work as suspected.
A lot of users reported problems with network troughput, resulting in visible artefacts and crippeled
playback and recording. Most of these issues have to do with bad network cabling, bad HUB's or
network switches, slow external harddisk/PC's/NAS/SAN Arrays etc.
Also important are the buffer settings, the used network protocols (i.e. SAMBA, CIFS, NFS etc.),
and the used image.
The forums are full of possible solutions, and I advice to try these solutions first, before opening
the case of your dreambox. 90% of these problems dissappear after correct software tweaking and tuning.
How to do this is outside of this documents scope. Please refer to the sattelite forums for more information
on these
subjects
The remaining 10% has a problem.
And lucky you there is a fix
The Cause:
The DM500 is equipped with a 10/100MBit ethernet interface. This interface consists of 1 chip on the
mainboard
and a couple of surrounding components. (on the bottom left hand of the board).
This chip handles the network connection, and (low level) traffic management. Mostly this is an ASIX
AX88796.
This chip needs the surrounding components to function correctly.
Recently a discovery was made that 3 surrounding capacitors did not quite meet the specifications given
by the manufacturer
of the network chip.
First of all there is a capacitor of 33uF/16V just above the chip (on the right side). This capacitor serves as
a current buffer
for the ASIX and makes sure that sudden short high current demands can be handled propertly, without
the voltage dropping
too low for this chip to operate. You have to understand that network cabling can be very long, so it takes
a lot of energy to
send a signal over these wires. If this energy cannot be delivered in a very short time, network problems
can arrise.
The discoverer of this mod found a value of 220uF/16v (Low Impedance/ESR!) better then the standard
33uF. With a bigger buffer,
the chance of power problems are minimized. I totally agree with him.
Then there are 2 VERY SMALL SMD capacitors just above the network chip. The function of these
capacitors is not totally clear to me,
but also have to do with delivering sufficient energy to the network. Luckely these SMD capacitors can
stay in place, and only need a
'backpack' of 2 parallel capacitors.
The Solution:
- Replace capacitor C65 (33uF/16V) (the 'big' one) by a 220uF/16V Low Impedance/ESR type.
- Solder a 4,7 uF/16V TENTAL! capacitor in parallel with C17. Watch the polarisation!
- Solder a 4,7 uF/16V TENTAL! capacitor in parallel with C23. Watch the polarisation!
Use a temperature of about 350 degrees celcius, and a very small tip! Especially C17 an C23 are very
small!
Below a picture with polarisation of a 4,7 uF Tental capacitor.
Replace by a 220uF/16V
Low Impadance/ESR
Parallel solder the 4,7uF/16V tental
capacitors on top of these two.
When you have done this correctly, the mod will look something like this:
References:
http://www.sat4all.com
http://www.pli-images.org
http://www.siennacountach.net/gallery/dreambox
http://www.dreamboxonline.com/forums...ead.php?t=1983
http://www.siennacountach.net/media/LAN_DM500.pdf

asa am scapat de problema cu Lan-ul

Multumesc userului guzy ptr link
Nu incercati modificarea daca nu aveti cunostinte minime in electronica si lipire smd.
P.S. se pot folosi condesatori obisnuiti ,nu musai cu tantal ,intrucat condesatorii cu tantal se gsesc mai greu.
Inlocuirea integratului nu va duce la eliminarea defectului
Stau la dispozitie tuturor ce au aceasta problema cu receptorul!

[adi sony]

Alt defect cu reteaua la Dm 500 ce am avut-o si am rezolvat-o a fost urmatoarea ,clientul a declarat ca nu mai poate intra pe RS232 sau intra f.f greu ,portul Lan nu mai functioneaza cu toate ca led-urile sant aprinse .
De fapt led-urile erau aprinse si cand cablul de retea era deconectat.
Nu era scurt-circuit pe integrat sau pe mufa de Lan
Prin inlocuirea integratului de Lan sa remediat defectiunea ,se poate intra pe RS232 cu Dcc sau Tk.,receptorul functionind in parametrii.

[sdw]

The Slow Network Issue
The Problem:
The DM500 is not particulary famous for it's recording and playback abilities on an
external mounted harddisk so don't expect miracles. But this doesn't mean it isn't
possible to record and playback your favorite show. Always bare in mind that sending
a high bitrate DVB stream over your network places a high demand on your network infrastructure.
This has to be in a perfect condition for recording to work as suspected.
A lot of users reported problems with network troughput, resulting in visible artefacts and crippeled
playback and recording. Most of these issues have to do with bad network cabling, bad HUB's or
network switches, slow external harddisk/PC's/NAS/SAN Arrays etc.
Also important are the buffer settings, the used network protocols (i.e. SAMBA, CIFS, NFS etc.),
and the used image.
The forums are full of possible solutions, and I advice to try these solutions first, before opening
the case of your dreambox. 90% of these problems dissappear after correct software tweaking and tuning.
How to do this is outside of this documents scope. Please refer to the sattelite forums for more information
on these
subjects
The remaining 10% has a problem.
And lucky you there is a fix
The Cause:
The DM500 is equipped with a 10/100MBit ethernet interface. This interface consists of 1 chip on the
mainboard
and a couple of surrounding components. (on the bottom left hand of the board).
This chip handles the network connection, and (low level) traffic management. Mostly this is an ASIX
AX88796.
This chip needs the surrounding components to function correctly.
Recently a discovery was made that 3 surrounding capacitors did not quite meet the specifications given
by the manufacturer
of the network chip.
First of all there is a capacitor of 33uF/16V just above the chip (on the right side). This capacitor serves as
a current buffer
for the ASIX and makes sure that sudden short high current demands can be handled propertly, without
the voltage dropping
too low for this chip to operate. You have to understand that network cabling can be very long, so it takes
a lot of energy to
send a signal over these wires. If this energy cannot be delivered in a very short time, network problems
can arrise.
The discoverer of this mod found a value of 220uF/16v (Low Impedance/ESR!) better then the standard
33uF. With a bigger buffer,
the chance of power problems are minimized. I totally agree with him.
Then there are 2 VERY SMALL SMD capacitors just above the network chip. The function of these
capacitors is not totally clear to me,
but also have to do with delivering sufficient energy to the network. Luckely these SMD capacitors can
stay in place, and only need a
'backpack' of 2 parallel capacitors.
The Solution:
- Replace capacitor C65 (33uF/16V) (the 'big' one) by a 220uF/16V Low Impedance/ESR type.
- Solder a 4,7 uF/16V TENTAL! capacitor in parallel with C17. Watch the polarisation!
- Solder a 4,7 uF/16V TENTAL! capacitor in parallel with C23. Watch the polarisation!
Use a temperature of about 350 degrees celcius, and a very small tip! Especially C17 an C23 are very
small!
Below a picture with polarisation of a 4,7 uF Tental capacitor.
Replace by a 220uF/16V
Low Impadance/ESR
Parallel solder the 4,7uF/16V tental
capacitors on top of these two.
When you have done this correctly, the mod will look something like this:
References:
http://www.sat4all.com
http://www.pli-images.org
http://www.siennacountach.net/gallery/dreambox
http://www.dreamboxonline.com/forums...ead.php?t=1983
http://www.siennacountach.net/media/LAN_DM500.pdf

asa am scapat de problema cu Lan-ul

Multumesc userului guzy ptr link
Nu incercati modificarea daca nu aveti cunostinte minime in electronica si lipire smd.
P.S. se pot folosi condesatori obisnuiti ,nu musai cu tantal ,intrucat condesatorii cu tantal se gsesc mai greu.
Inlocuirea integratului nu va duce la eliminarea defectului
Stau la dispozitie tuturor ce au aceasta problema cu receptorul!

Adi, e suficient sa-l inlocuiesc doar pe cel de 33uF ? L-am inlocuit cu unul de 220uF si vad ca e ok. Celelalte 2 sunt in SMD si nu am asa ceva.

[adi sony]

Este ok ,nu e nevoie sa pui si ceilalti condesatori ,este suficienta inlocuirea celui de 33 mF,cel de pe alimentare

[lao]

Multumesc si eu celor care ne invata!
Imi pierdea 30-40% din pachete la ping si era inutilizabila reteaua, am inlocuit condensatorul de 33 micro si acum e perfect.

[gigi_cu]

Dureaza cam mult pana porneste LAN -ul la DM500 si m-am hotarat sa modific C17 C23 si C65 conform unor indicatii si foto de pe site-uri italiene dar am observat ca C65 nu e de 33uF ca in schema ci de 47uF si polaritatea e invers ,nu ca in foto.
Nu stiu ce sa fac sa schimb numai C65 cu 220uF si sa respect polaritatea asa cum e originalul si sa pun si in parelel cu C17 si C23 4.7uF ? (din schema nu par a fi electrolitici).
Astept pareri.
Mersi.

[adi sony]

Inlocuieste condesatorul de pe alimentarea integratului de Lan ,e suficient