Dead Vu+Duo repair guide

[dfdream]

I replaced the capacitor for him and it boots up first time all the time... Result..
One question.
Whats the advice to avoid this happening again.
Some say its caused by turning on and off with power switch.
If so what is the recommended process to turn off a DUO at night (not deep standby).

yes thats a definite sign things are not rite, i would tell him to leave the unit powered off to prevent further damage occurring.

 

[Larry-G]

To my knowledge, its due to overheating, which dries out the caps.

 

[Rob van der Does]

The issue seems to be frequency related. Adding a small ceramic capacitor (parallel to the normal one) seems to enhance life expectancy very much.

 

[Alec]

I replaced the capacitor for him and it boots up first time all the time... Result..
One question.
Whats the advice to avoid this happening again.
Some say its caused by turning on and off with power switch.
If so what is the recommended process to turn off a DUO at night (not deep standby).

The original capacitor was rated at 85 centigrade, and I changed mine to 105c. Also make sure there is adequate ventilation, especially if you use the HD quite a lot.

 

[darp]

Thanks from me to!! I put in a 330uf 50volt cap and all is well

 

[Maxwell]

The issue seems to be frequency related. Adding a small ceramic capacitor (parallel to the normal one) seems to enhance life expectancy very much.

That suggests that the original design is wrong and it requires a slightly higher value capacitor than is fitted since capacitors in parallel values are added together, added to that electrolytic capacitors have a tolerance of up to +/- 80% especially the cheap ones.

To make a proper job if I replace an electrolytic in a repair I use Tantalum replacements as they are more accurate value wise and are not chemical so don't dry out

 

[Rob van der Does]

Seems to have to do with ESR or so. Sounds familiar?

 

[Maxwell]

The ceramic may reduce some electrical 'noise' depends on its value but one on its own does not have a significant effect and in any case most switch mode power supplies are inherently electrically quiet - incidentally that is another reason to use Tantalum capacitors as they are 'quieter' than electrolytics by nature

 

[Jano59]

Tried to replace the cap without any luck, one of my m8s had same issue an got it repaired at the shop he bought the unit at.
They replaced the PSU for about 100€.

My question is: Does anyone in here know a good reseller that sells Vu+ Duo PSU's ?

 

[paulcox22]

Hello everyone, has anyone had an issue where there is no power at all, not even the red light on the front display? and is it the same fix?

 

[mcremin]

hi new to this thread recently purchased a minivu+duo twin tuner box. turned it on this morning and there is a red light on box and no signal on tv the box is recognising the remote as the green led flickers when i press a button on the remote please help

 

[Larry-G]

hi new to this thread recently purchased a minivu+duo twin tuner box. turned it on this morning and there is a red light on box and no signal on tv the box is recognising the remote as the green led flickers when i press a button on the remote please help

sorry but you will have to look else where, we dont provide support for Clones on this forum.

 

[Hoss696]

Hi I have a box that gone dead red light lights up when you touch it could you point out witch capacitor need replacing I carnt understand by the picture you could email me if it's no bother thanks hoss696. [email protected]. Cheers

 

[danped]

Will one of these do the trick as a replacement for c807

http://www.maplin.co.uk/p/220f-35v-105c-radial-electrolytic-capacitor-n86kf

 

[scottywhu]

Hi all,

Yep, got the same problem with RED LED.

Could someone please advise whether the capacitor 'danped' named above will work ?

Thanks

Scottywhu

 

[Stanman]

Hi all,

Yep, got the same problem with RED LED.

Could someone please advise whether the capacitor 'danped' named above will work ?

Thanks

Scottywhu

Not sure but search the forum there is a thread on the red light and capacitor you need.

Sent from my GT-I9305 using Tapatalk

 

[timofee]

I can confirm that the 220µF 35V capacitor referred to above is ok as a replacement for c807.

 

[scottywhu]

Just wanted to give thanks... Changed my capacitor yesterday and all working perfectly.... Saved me a fortune.. Cheers

Sent from my Nexus 7 using Tapatalk HD

 

[nikdegreek]

Hi guys help please having brought a vu duo box of yourselves had a power surge which has resulted in red light of death!!! read that this could be a capacitor problem so took of the lid to look and there is no capacitor in area c807. The box is relatively new bought 11/11/13 and im thinking they have changed design of motherboard and maybe moved capacitor to another location if anyone out there could give me some advise what i should do Im really screwed without tv over bankholiday and half term!!!

 

[abu baniaz]

The capacitors are in the same place. They have changed them to SMD type. (Surface Mounted Device).

Looks like C850 is burnt.