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#14751 - 12/22/17 10:09 PM Freeze DM7025
oled Offline
stranger

Registered: 12/22/17
Posts: 14
Hello ,
suddenly the dec began an unusual behavior
first with digital terrestrial channels and then with satellite.
after about half an hour the image starts to block then starts again and so on. I thought they were channels that are not well received but it is not so because attacking the other my dec and verifying the signals with the antennist are all good.
I do not understand if it's a power problem

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#14752 - 12/22/17 10:10 PM Re: Freeze DM7025 [Re: oled]
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9539
Most probably the capacitors from the PSU are becoming old and doesn't give enough anymore...

Look here, it's good to replace these capacitors by high quality Rubyconn 105° ones.

http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=1606#Post1606

Admin
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#14753 - 12/23/17 08:26 PM Re: Freeze DM7025 [Re: Admin]
oled Offline
stranger

Registered: 12/22/17
Posts: 14
thanks
but the scheme of where these capacitors are located where I can find them

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#14754 - 12/23/17 08:28 PM Re: Freeze DM7025 [Re: oled]
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9539
You can find them with the ID printed on the PCB of the PSU,

Change the small electrolytic caps under HS1 (heat sink1) and C6 just above.

C36 = 100 microF 25V - 105°
C31 = 10microF 50V - 105°
C38 = 1microF 50V - 105°
C23 = 47microF 25 - 105°
C6 = 1 microF 50V - 105°

Admin
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#14756 - 12/23/17 10:07 PM Re: Freeze DM7025 [Re: Admin]
oled Offline
stranger

Registered: 12/22/17
Posts: 14
Item is ETXEZ654M7F but the abbreviations of the capacitors shown above I can not find on the card there are other numbers

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#14757 - 12/23/17 10:53 PM Re: Freeze DM7025 [Re: oled]
Toysoft Online   content
Japhar Member
Carpal Tunnel

Registered: 10/22/10
Posts: 2599
Take a photo of the PSU (Power Supply) board, and post here,

TS
_________________________
DM8000, DM800se, DM500HD, DM800HD, DM7025, DM7020s, DM7000, DM500s
VU+ Solo, VU+ Uno, VU+ Duo, Kathrein UFS910
Tivusat, TNTSat, Fransat, SSR/TSR, BBC1-2-3/ITV
DE-OpenBlackHole 1.4 image : http://www.openblackhole.com/

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#14760 - 12/24/17 12:34 AM Re: Freeze DM7025 [Re: oled]
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9539
Check also with Johnny from jb8a8f8.com, our Hardware Guru,

https://jb8a8f8.com/support/index.php?threads/dm7025-not-switching.236/

Admin
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#14761 - 12/24/17 12:56 AM Re: Freeze DM7025 [Re: oled]
oled Offline
stranger

Registered: 12/22/17
Posts: 14
Photo



Attachments
foto10.jpg (19 downloads)


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#14762 - 12/24/17 10:23 AM Re: Freeze DM7025 [Re: oled]
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9539
It's the same PSU as for DM8000HD, please check with johnny from jb8a8f8.com, and your box is then most probably a DM7025+,

Admin
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#14764 - 12/24/17 01:22 PM Re: Freeze DM7025 [Re: Admin]
oled Offline
stranger

Registered: 12/22/17
Posts: 14
check from jb8a8f8.com but if so, can not the capacitor change be applied?

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#14765 - 12/24/17 01:37 PM Re: Freeze DM7025 [Re: oled]
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9539
I think it's a different design, the DM7025 had a different PSU than then DM7025+ (that is a DM8000HD PSU)

We have a solution here, for DM8000HD PSU, but generally the original PSU seems to work better than the clones one that are discussed on this topic, I let you read it but best is really to open a topic about this issue, talking about the possible PSU problem to Johnny at http://jb8a8f8.com.

Topic about DM8000HD PSU Clone problems : http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=1592#Post1592

Admin

Originally Posted By: oled
check from jb8a8f8.com but if so, can not the capacitor change be applied?
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