Openbox S11 Dead, faint ticking noise

[mforbes6186]

Hi,

I was looking for a bit of advice with a dead OB S11. Looks totally dead with no display on LED or TV but there is a faint ticking noise as described on other posts. I thought it may be the PSU needing replaced however there is juice on each of the rails but just not as high as expected, ie 24v rail = 8v, 12v = 3.5v, 5v = 0.5v etc

Could it still be the PSU that's needing replaced or is it likely it's the MB that's gone?

Cheers,
Mark

[nibblitz]

No way of knowing... The voltages might read inaccurate when there is no load present.. Comparing the (gamble) cost of a replacement PSU for an old version Openbox VS the cost of buying a brand new latest version of Openbox, I know what I would do...

[jimbofz]

take a look inside ,remove power lead first
then examine all the electrolytic capacitors see if they have "bulged"
at the top they should be flat on the top ,
they can also leak out some of their electrolyte causing a stain on the board .
these caps are not expensive and anyone with experience of using a soldering iron should be able to change them.
i have a s9 so i expect the psu board to be something similar
these caps are typically 1000uf 470uf 680uf.they are polarity conscious so make sure ther are fitted the correct way round

[mast]

Hi

From my experience the psu should read the correct voltages, that is a classic psu gone pear shaped. I accept the caps could be screwed but its defo the psu by the sounds of it.

Its your call wether you want to try a new psu about ?15ish on fleabay but on the other hand although I think its more than likely a new psu will/should get it going it could have done some other damage too and I think thats what nibblitz is trying to say.

You weigh it up and decide, new psu or new box.

Regards

[zorro]

change the 1000uf cap in psu hope this helps

[DW190]

If your not in a rush you can get one for around a fiver.

Power Supply board SMPS for openbox s10 s11 skybox s10 s11 satellite receiver-in Satellite TV Receiver from Consumer Electronics on Aliexpress.com (http://www.aliexpress.com/item/Power-Supply-board-SMPS-for-openbox-s10-s11-skybox-s10-s11-satellite-receiver/521998695.html)

[Hadron]

Hi,

I was looking for a bit of advice with a dead OB S11. Looks totally dead with no display on LED or TV but there is a faint ticking noise as described on other posts. I thought it may be the PSU needing replaced however there is juice on each of the rails but just not as high as expected, ie 24v rail = 8v, 12v = 3.5v, 5v = 0.5v etc

Could it still be the PSU that's needing replaced or is it likely it's the MB that's gone?

Cheers,
Mark

Were those readings taken with the ribbon cable still connected to the MB? If so, try again with the ribbon cable disconnected.

If you still get low readings, then it's definately the PSU. If the readings are normal, then it could still be either the PSU or MB.

[mforbes6186]

change the 1000uf cap in psu hope this helps

It does look as though the 1000uf is slightly bulged, i'll try replacing that, thanks. Will any 1000uf 10v cap do?


Were those readings taken with the ribbon cable still connected to the MB? If so, try again with the ribbon cable disconnected. If you still get low readings, then it's definately the PSU. If the readings are normal, then it could still be either the PSU or MB.

With the ribbon out the voltages were much higher, the 12v/24v rails were 15v/31v respectively and the 2 5v rails were 2.5v. I think given the cap is bulged i'll try changing that first before replacing the PSU. cheers

[mast]

Hi

Nowt to lose so go for it, just be aware of the polarity though.

Regards

[seangraves]

Hi,

I was looking for a bit of advice with a dead OB S11. Looks totally dead with no display on LED or TV but there is a faint ticking noise as described on other posts. I thought it may be the PSU needing replaced however there is juice on each of the rails but just not as high as expected, ie 24v rail = 8v, 12v = 3.5v, 5v = 0.5v etc

Could it still be the PSU that's needing replaced or is it likely it's the MB that's gone?

Cheers,
Mark
sorry ta say is it worth botherin repairing mate

[mast]

sorry ta say is it worth botherin repairing mate

Hi

Well to the OP its worth it, if he has any soldering skills, a cap costing pennies and maybe 15 minutes of his time and he could have it repaired so perhaps its worth a go to him.

Regards

[mforbes6186]

sorry ta say is it worth botherin repairing mate

Yeah, i've got 3 boxes with the same issue so it would def be worth trying at least. I'll do one and se if it helps. Will any 1000uf 10v cap from maplin etc do? cheers

[Hadron]

Yeah, i've got 3 boxes with the same issue so it would def be worth trying at least. I'll do one and se if it helps. Will any 1000uf 10v cap from maplin etc do? cheers

For a permanent repair you need a low ESR 105C capacitor, but temporarily fitting a normal 85C cap would prove whether it is actually the cap at fault. Maplin do a 105C 1000uF 16v cap (Order Code: DT69A for 54p), although you might find a better low ESR one on Ebay. The original ones fitted to the PSU are not only cheap, but are physically smaller than a good quality one. Luckily there is a bit of room around C11, so you might still be able to squeeze it in.

[mast]

Hi

Not bought caps for a while but I think its the high temp ones you want, the chinese ones on these boxes are most likely cheapos so get the same value cap but high temp.

Edit: While I was typing up Hadron has said exactly what I meant. Didnt really want to tell you to up it to 16v but it defo has to be 105 degrees. If you can squeeze the 16v then I personally would do that.

Regards

[Hadron]

There's no particular need for a 16v cap, it's just that Maplin don't do a 10v type.

It's a shame that Maplin's website has gone downhill over the last year or so. They used to give you all the details of their components (dimensions etc.). Not sure how big the Maplin one would be, compared to the original.

[mast]

Hi

Yeh no need but I always upped it to the next rating within reason when I used to change them before in the old days. Whats more important is that they are 105 degrees.

Regards

[Hadron]

Just found the ones that I used to repair my PSU a few months ago. I have always prefered Panasonics for repairing TVs, monitors etc.

1000uf 10v 105c Panasonic LOW ESR x5pcs | eBay (http://www.ebay.co.uk/itm/1000uf-10v-105c-Panasonic-FC-LOW-ESR-x5pcs-/290793837609?pt=UK_BOI_Electrical_Components_Suppl ies_ET&hash=item43b4a9d429)

They just about squeeze into the space. The seller may also do a 16v version. If so, and the dimensions are no larger than the 10v version, then you may prefer them.

I ordered mine mid-afternoon & they were delivered the following morning.

[mforbes6186]

Thanks for the help

I've found the 16v version from the same seller (1000uf 16v 105c LOW ESR Panasonic series x4pcs | eBay (http://www.ebay.co.uk/itm/1000uf-16v-105c-LOW-ESR-Panasonic-FC-series-x4pcs-/290784221685?pt=UK_BOI_Electrical_Components_Suppl ies_ET&hash=item43b41719f5)), they are 25x10mm so 9mm taller than the 10v version, do you think they will be ok height wise? I can't see any potential obstructions on the box but just in case. I do have a limited electronics knowledge but not really too sure what the benefit would be of a 16v over the 10v, is it more protection against voltage peaks etc?

I did also order some of these last night (10 x 10V 1000uF 105?C electrolytic radial Capacitor | eBay (http://www.ebay.co.uk/itm/120895463336?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649)), are they cheapos do you reckon?

[Hadron]

Thanks for the help

I've found the 16v version from the same seller (1000uf 16v 105c LOW ESR Panasonic series x4pcs | eBay (http://www.ebay.co.uk/itm/1000uf-16v-105c-LOW-ESR-Panasonic-FC-series-x4pcs-/290784221685?pt=UK_BOI_Electrical_Components_Suppl ies_ET&hash=item43b41719f5)), they are 25x10mm so 9mm taller than the 10v version, do you think they will be ok height wise? I can't see any potential obstructions on the box but just in case. I do have a limited electronics knowledge but not really too sure what the benefit would be of a 16v over the 10v, is it more protection against voltage peaks etc?

I did also order some of these last night (10 x 10V 1000uF 105?C electrolytic radial Capacitor | eBay (http://www.ebay.co.uk/itm/120895463336?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649)), are they cheapos do you reckon?

Looking at the inside of my Skybox S11, I think the 16v version of the Panasonic type would just come level with the top case, so it might not be suitable. You don't want it pressing against the case.

Some people prefer to use a higher voltage type when changing caps for the reasons you give, but I prefer to keep to the original spec. I believe that electrolytic capacitors do not perform too well if you use one that's rated a lot higher than the voltage it has to handle. Although a 16v type on a 5v supply should be OK.

I prefer to use known good makes such as Panasonics. I notice that there is no brand name mentioned for the ones you ordered. They will work OK, but for how long?

[mforbes6186]

Just to let you know i've sorted 2 of the boxes just by changing the C11 (1000uf 10v) cap with those in the link above, the 16v were too tall as you said. Thanks again for you help!

For anyone looking to do the same, the original C11 (1000uf) cap needs a bit of persuasion to come out but a bit of heat and pulling and it comes out!

[sailsy]

Just to let you know i've sorted 2 of the boxes just by changing the C11 (1000uf 10v) cap with those in the link above, the 16v were too tall as you said. Thanks again for you help!

For anyone looking to do the same, the original C11 (1000uf) cap needs a bit of persuasion to come out but a bit of heat and pulling and it comes out!

Glad you got it sorted i have the same problem! Im going to order what you ordered could you please provide me with the link i have a maplin down the road?

I have a load of dead xbox's would anyone know if there are any in there i could use not being a cheap skate bloody lad hassling me wants in done like now lol!

[Hadron]

Glad you got it sorted i have the same problem! Im going to order what you ordered could you please provide me with the link i have a maplin down the road?

I have a load of dead xbox's would anyone know if there are any in there i could use not being a cheap skate bloody lad hassling me wants in done like now lol!

I would still recommend the Panasonic ones from here:-

1000uf 10v 105c Panasonic LOW ESR x5pcs | eBay (http://www.ebay.co.uk/itm/1000uf-10v-105c-Panasonic-FC-LOW-ESR-x5pcs-/290793837609?pt=UK_BOI_Electrical_Components_Suppl ies_ET&hash=item43b4a9d429)

They work out at 42p each after adding p&p, & you will have a few for your spares box.

I have just looked at my Maplin catalogue (as the website doesn't give you any specs for their capacitors). Their 1000uF 16v high temp cap (DT69A) has a diameter of 10mm & height of 16mm, so it will fit on the board OK. Here's a link (you have to scroll down the list to find it):-

High Temperature Radial Electrolytic Capacitors : Electrolytic : Maplin Electronics (http://www.maplin.co.uk/high-temperature-radial-electrolytic-capacitors-11992)

[sailsy]

I would still recommend the Panasonic ones from here:-

1000uf 10v 105c Panasonic LOW ESR x5pcs | eBay (http://www.ebay.co.uk/itm/1000uf-10v-105c-Panasonic-FC-LOW-ESR-x5pcs-/290793837609?pt=UK_BOI_Electrical_Components_Suppl ies_ET&hash=item43b4a9d429)

They work out at 42p each after adding p&p, & you will have a few for your spares box.

I have just looked at my Maplin catalogue (as the website doesn't give you any specs for their capacitors). Their 1000uF 16v high temp cap (DT69A) has a diameter of 10mm & height of 16mm, so it will fit on the board OK. Here's a link (you have to scroll down the list to find it):-

High Temperature Radial Electrolytic Capacitors : Electrolytic : Maplin Electronics (http://www.maplin.co.uk/high-temperature-radial-electrolytic-capacitors-11992)

Thanks for help went down Maplin electronics i think i got 1000uf 16v slightly bigger but went in just about made up with myself!"

Thanks for all the input guys!

[Hadron]

Just to let you know i've sorted 2 of the boxes just by changing the C11 (1000uf 10v) cap with those in the link above, the 16v were too tall as you said. Thanks again for you help!

For anyone looking to do the same, the original C11 (1000uf) cap needs a bit of persuasion to come out but a bit of heat and pulling and it comes out!

Good to hear. Did this work for the 3rd box, or haven't you tried it yet?


Thanks for help went down Maplin electronics i think i got 1000uf 16v slightly bigger but went in just about made up with myself!"

Thanks for all the input guys!

Also good to hear. The Maplin cap is the same size as the Panasonic ones that I got. They are slightly bigger than the original, but luckily there is a bit of room around the C11 position, so it just about fits.

[leeant]

hi all i had this same problem with my s11 bought a new psu around ?15 of ebay now working perfect:tan:
thanks to all that post info on this site i have found very helpful over the past few months

[Hadron]

hi all i had this same problem with my s11 bought a new psu around ?15 of ebay now working perfect:tan:
thanks to all that post info on this site i have found very helpful over the past few months

What did you do with the old one?

You might get a few ?'s back selling it on Ebay.

[jumbopants]

Hi All, My S11 has gone the same way, no display and a very very faint what I would describe as high pitched noise you can hear with the lid off, but unsure if I would say ticking noise .... I've taken the cover off and it looks like the c11 and the c15 have slightly bulged on the top, could they both have gone ? or should i do the c11 first and then the c15 ? Also when I say bulged its so slight I'd not have noticed if I'd not read this link, is just the slightest of bulges enough to stop it working ?

[Hadron]

Hi All, My S11 has gone the same way, no display and a very very faint what I would describe as high pitched noise you can hear with the lid off, but unsure if I would say ticking noise .... I've taken the cover off and it looks like the c11 and the c15 have slightly bulged on the top, could they both have gone ? or should i do the c11 first and then the c15 ? Also when I say bulged its so slight I'd not have noticed if I'd not read this link, is just the slightest of bulges enough to stop it working ?

I would change both.

I found the fault on my PSU using an ESR meter. C11 on my PSU looked perfectly normal. No bulging. No discharge. But it had still gone bad.

If the top of the capacitor looks even slightly bulged compared to the others, then it is probably on it's way out.

[sailsy]

Got another s11 with a faulty 1000 uf the one next to it also looks bulged 470 uf cant see voltage anyone know what voltage it is c15 I think it was or c11 going to change both any input appreciated again thanks

[Hadron]

Got another s11 with a faulty 1000 uf the one next to it also looks bulged 470 uf cant see voltage anyone know what voltage it is c15 I think it was or c11 going to change both any input appreciated again thanks

C15 is also a 10v capacitor, and is the one that also fails, along with C11.

The voltage should be printed on the side somewhere.

[slugworth]

you don't have to replace it with an exact size one,I would go for a higher working voltage but those are always fatter so you may not have the room.

[any-mgzt]

Just repaired the PSU in an S11 using the caps from Maplin, 16V 1000?f fits OK on the board no problem at all.