Uec DSD4121 stb box issues

[mtv]

Under the HAS/SSS assistance arrangements, is there a minimum size dish stated or is it left to the installer?

Left to the installer, as minimum size will vary depending on installation location.

[fourthofjune]

1. Unplug unit from power.
2. Disconnect cable to lnb.
3. Reconnect power.
4. Unit will look for signal and, of course, be unable to find one.
5. Press "MENU" button on front of box.
6. Navigate to the 'RESET' option and reset to factory defauls.
7. Let the box do its thing and then disconnect power.
8. Reconnect cable to lnb.
9. Reconnect power.
10. After unit has rescanned, all should be fine.

I hope this helps!

[Rentakill]

Hi Guys.

Just had my DSD 4121 Power Supply Fail. Totally Dead as a doornail.
Just over 15 Months old
Anyone know where i can source a replacement Supply Board from.

Cheers:

[Tiny]

Try UEC, I'm sure they will sell you parts out of warranty, & for that matter 15 months old; they may replace the power board as an extension of warranty as it is a known problem.
Good luck.

Altech UEC

Address: 27 Sirius Road Lane Cove West NSW 2066 AUSTRALIA E-mail: sales@uec.com.au Telephone: +61 2 9425 5777 Fax: +61 2 9425 5799

Edit: support email at support@uec.com.au

[OSIRUS]

Hi Guys.

Just had my DSD 4121 Power Supply Fail. Totally Dead as a doornail.
Just over 15 Months old
Anyone know where i can source a replacement Supply Board from.

Cheers:

here is one on Ebay



Also this seller will fit it for you "If you wish we can fit the board for you. Extra charge of $15 plus postage apply."

I don't know anything about its quality.....etc.... or if it is you bute good stuff.....

It also does say to have it fitted by someone who knows what they are doing, can be very dangerous

Alternatively....you could put in a replacement 12V power supply...... here is another one on Ebay



Again do not know about its quality....etc.... or if it is you bute good stuff


I would definitely check out the UEC option of fixing it too.....

[Rentakill]

Thanks for that Osirus and Tiny...
Will Look into that...
I found this link the other night :


Quite a bit cheaper too..

[Rentakill]

Gidday Guys

Took me a while, but i finally picked up a replacement Power supply module for the VAST DSD 4121.
Ended up opting for a 12VDC Module instead of the 240vAC Original.
Obtained replacement from CrazyStu's who were brilliant - Cost $85.00

Just means i now use an external 12VDC Power Adapter which plugs into the DSD 4121 12VDC power Supply. ( Good for the Caravan if Required)
Installation is completed in Minutes - Plug and Play.
New Power Supply runs nice and cool.
Back up and running - All Good.

Cheers:

[swrfmaker]

After spending the past couple of weeks battling with my DSD4121 requiring constant rebooting to maintain signal, I found that the problem appeared related to the HDMI output. My TV states that it is not fully compatible with HDMI versions before v1.4, so after being unable to find any info on the HDMI version used in the DSD4121, I substituted connection between the Sat receiver and TV with a component (rather than HDMI) connection - result is that the problem has not reoccurred. Maybe this is a simple "fix" for others who have experienced similar problems with the DSD4121 but since the problem definitely appears to be a TV/DSD4121 HDMI handshake issue, I would love to know what HDMI version the Sat receiver runs or whether it is a fault on the HDMI output section of the board.

[domwild]

My dead DSD4121 PVR ready seems to have power supply problems and I am determined to fix it myself or buy a power supply ($65), too much for a pensioner. I doubt I buy a UEC machine again, so I have to throw the recordings away on the TByte HD. Pity I threw away the power supply of the Aurora box. The power supply tells me the voltages are

3.3 5 12V at the far end. But there are seven lines in the ribbon cable to the sat box. Does anyone with a black belt in electrickery know the voltages coming out of the power supply starting at the left hand side, the first cable is white and the black cable at the end seems to be the 12V line. Thanks.

[irritant]

Yep, when the STB says "boot" on the front, it is faulty. We sometimes have the same problems here in South Africa, where the UEC boxes are made.

Sometimes it will go into an extremely annoying rebooting loop.

[tristen]

I've taken the cover off a DSD4121 a few minutes ago and checked the voltages as follows.

From left to right at the connector on the rear of the PSU.

3.3V, 3.3V, 0V, 0V, 5.1V, 5.1V, N/C, 13.2V.

So, numbering the connector pins (1 to 8) at the rear of the PSU PCB from left to right...

Pins 1 and 2 (white) share a common land on underside of PSU PCB (3.3V).
Pins 3 and 4 (white) share a common land on underside of PSU PCB (Ground).
Pins 5 and 6 (white) share a common land on underside of PSU PCB (5.1V).
Pin 7 and 8 share a common land on underside of PSU PCB.
Pin 8 is 13.2V. (Black wire).

The voltages are actually printed on the top of the PSU PCB on the unit which I checked.

[domwild]

Hi,

The net is full of messages condemning the power supply on these units. Am at the end of the power line with my own transformer at North Walpole, the UEC DSD4121 PVR died during night time recording but not the TV on standby. Pity I threw away my Aurora box as the power supply may have fitted my now dead DSD4121 PVR. Am trying to get the voltages coming out of the power supply and have already one answer already but wish to get confirmation for it. The factory just wrote

3.3 5 12

on the supply side, which is not very useful as there are seven lines. As a pensioner I wish to fix it myself and buying a new power supply ($55-$65) and finding the old one has messed up the sat board next to the power board would be a little bit too harsh. As another member said on a different forum, we can have 240V +/- 7% (?) and that really stresses this unit.

UEC quotes a free repair quote, $20 return postage if you do not like the quote and a $88 min. repair cost. May have to buy a Satking or Humax and throw away my recordings on the USB HD. By the way, at the beginning of VAST I used a USB-powered HD, no good, either the HD was drawing more than the 500mA USB demands or the UEC box does not supply 500mA. Had to get an externally powered one.

Can you help with voltages? Thanks.

[Tiny]

Can you help with voltages? Thanks.

look at what tristen has done for you in the above post #71

Take your medication, calm down & stop posting the same thing in different threads all over this forum.

You have been told that the error you have is a memory error, not power supply.

Yes the UEC 4121 has had a bad run with power supplies, however, they all, from my understanding went boom, no power.

I have one of the original UEC 4121's from 2010 & it still runs perfectly.

I also own a UEC 4639, happy with that as well.

If you decide to replace this box, you still have other options as I'm sure you wont buy a UEC, so the Satking will probably be your only choice; as with your attitude do not buy the Humax until you read all of it's problem threads.

[OSIRUS]

Yep, pick an option

1. send it to UEC for a Quote or Repair ?
2. Replace the Power board (looks like plug & play operation) & see if this fixes it or not ?
3. Get a new STB ?
4. Try and "fault find" the problem ..... but I think you would need some expertise if you do this ..... I have heard the power board can give you a dangerous shock & could be dangerous ....? so be careful if not experienced in this

weigh up your options ..... which best suit you ..... ?

[domwild]

I've taken the cover off a DSD4121 a few minutes ago and checked the voltages as follows.

From left to right at the connector on the rear of the PSU.

3.3V, 3.3V, 0V, 0V, 5.1V, 5.1V, N/C, 13.2V.

So, numbering the connector pins (1 to 8) at the rear of the PSU PCB from left to right...

Pins 1 and 2 (white) share a common land on underside of PSU PCB (3.3V).
Pins 3 and 4 (white) share a common land on underside of PSU PCB (Ground).
Pins 5 and 6 (white) share a common land on underside of PSU PCB (5.1V).
Pin 7 and 8 share a common land on underside of PSU PCB.
Pin 8 is 13.2V. (Black wire).

The voltages are actually printed on the top of the PSU PCB on the unit which I checked.

Tristan,

Thanks for this confirmation of the voltages, this is brilliant! Many thanks. I have an identical answer from another forum from member M'bozo (!) and have since forgotten which forum as I in desperation talked to Dr Google all day long. Now I am game enough to experiment with lots of power supplies I have accumulated over the years, except the fool that I am I threw away the Aurora Strong box's PSU, which perhaps is more suitable. Those of you with a grey or lesser belt in electrickery will find that old settop boxes, PVRs, etc. all seem to have PSUs with 3.3, 5 and 12V if not more voltages up to 21V and you may wish to experiment in blowing up the sat board next to the PSU board.

You are correct, they are printed but only 3.3 5 12 and no other detail in my case.

[domwild]

Good question OSIRUS! The PSU should not give you a shock as long as you ensure you do not work on it while connected to 240VAC. A new PSU ($55-$65 ex Fleabay) should also have dead (non-charged) capacitors, so they cannot zap you. As Tristan and M'bozo helped me with the voltages I will see if I can blow the smoke back into my dead DSD4121 by hooking it up, correctly I hope, to other old 3.3, 5 and 12V PSUs. If that does not work, then I will buy a Satking instead as my revenge of having had to throw out a Strong Aurora box when VAST came in and now a UEC box.

One dealer said the Satking only allows USB sticks up to 32GB for recording, this seems to be bovine excrement of the first order.

[domwild]

Yep, pick an option

1. send it to UEC for a Quote or Repair ?
?

UEC told me repair quote is free and if I do not accept the quote the cost is $20 for return of unit. Min. cost of repair is $88. Good luck! Warranty on repair is three months.

[domwild]

look at what tristen has done for you in the above post #71

Take your medication, calm down & stop posting the same thing in different threads all over this forum.

You have been told that the error you have is a memory error, not power supply.

Sorry Tiny, while talking to Dr Google in my desperation and plastering my query several times over this forum (and annoying people!) and whirlpool, thebackshed, etc. fora I missed this correct message from Tristan, which confirmed M'bozo's voltages. Am grateful for help and all the suggestions and you all have my sincerest apologies.

Correct, UEC suggested a flash memory problem but when pressed for a fixed repair quote could not oblige. Min. cost of repair $88 and $20 cost of returning unit if I do not like the quote. You are also correct in suggesting to choose Satking if I cannot fix the UEC with my many 3.3,5,12V PSUs. Interesting to note when I spoke to a Perth dealer he suggested the Satking only takes 32GB USB sticks for 32 hrs. of TV recordings!?! No wonder stingy pensioners like myself have a cynical attitude and get desperate.

You are also correct in suggesting I should hit the turps more regularly, after all, reality is but an illusion due to a lack of drugs!

[domwild]

Left to the installer, as minimum size will vary depending on installation location.

gordon: Problem is that during rain even your 85 cm dish will not be good enough and I have been told even the massive dishes of the earth stations then suffer outages.

[Softek2]

try replacing both 1M0 kick start resistors. A common problem is one goes high or O/C after a power failure. Replace both as a precaution. WARNING even after being switched off for some days the mains electro is still charged (poor design) and will give quite a shock. The box is dead anyway and to replace these resistors cant do any more damage. Hope this helps.
PS: resistors are (R2 & R3 by memory) & are located near the mains filter cap and are in series. Lift one leg of one resistor before testing.