General Forum

Re: DVD1 - freezes after 30+ minutes

stuartross — Sun, 31 Aug 2008 17:42:42 GMT

Dear Marcus,

DVD1 has now for me joined BeoMedia1 as my most disappointing purchases from B & O. I am currently having my DVD mechanism repaired for the second time. When the first repair was performed the engineer inadvertently removed the multi region chip that I had paid £150 for. So I guess my DVD 1 has cost me £800 (Purchase) + £150 (Multi-region chip) + £400 (two mechanisms) = £1350! Don't get me started on BeoMedia 1. I admire your determination Marcus.

Re: DVD1 - freezes after 30+ minutes

Beogen — Sun, 31 Aug 2008 12:01:46 GMT

joostdeclercq:
@Beogen: Hi, I'm facing the same problem and did some experiments by installing an internal fan, but until now without any big results.... Anybody more success?

Regards
Joost, Gent (B)

Hello Joost,

I had some small heatsinks installed and the first DVD seemed quite OK but when I faced the same problem with a second one I went to the 'containerpark in Gent' and I threw it away. Shame on you B&O...

Recently I bought a 99 euro DVD player which is supported by the PUC controller, doing a very good job.

Re: DVD1 - freezes after 30+ minutes

mason — Sun, 31 Aug 2008 10:31:43 GMT

I had the same problem – had the mech replaced for about £150.00 and it still went pear-shaped. Very frustrating! In my experience DVD 1's have always been unreliable. I had a £120 Sony player that was bullet proof – even down to playing my kids scratched discs satisfactorily. B&O should hang their heads in shame considering the original price of around £800.BTW your dealer should be able to lend you the software updater if you want to restore the B&O interface from the Phillips one.

Re: DVD1 - freezes after 30+ minutes

joostdeclercq — Sun, 31 Aug 2008 02:59:39 GMT

@Beogen: Hi, I'm facing the same problem and did some experiments by installing an internal fan, but until now without any big results.... Anybody more success?

Regards

Joost, Gent (B)

Re: DVD1 - freezes after 30+ minutes

Dude1 — Fri, 08 Aug 2008 08:13:10 GMT

Nobby, then it would be component degradation. It does happen, ask Rolls Royce.

Re: DVD1 - freezes after 30+ minutes

nobby — Fri, 08 Aug 2008 04:36:11 GMT

Component fatigue? What is that ... does it get too tired? ;)

Generally components either fails, degrade, or operate normally ... what are you suggesting is the fault in this instance?

The manufacturer of the PCB, the manufacturer of the devices (multiple) and the assembly company are all independant and operating in their own environments with their own design rules ...

Re: DVD1 - freezes after 30+ minutes

Dude1 — Fri, 08 Aug 2008 04:08:31 GMT

It does become all a bit technical.

Essentially the DVD1 has some inherrient design flaws with its mech. This was why it was eventually upgraded to a more reliable mechanism.

The DVD1 mark 1 mech can internally overheat. Causing component fatigue after a period of time. This is not uncommon for any manufacturer of PCBs - especially when used in intstances or machines they werent designed for.

In theory, it could be fixed. But you would have replaced most components on the PCB by this point.

Hope this helps.

Re: DVD1 - freezes after 30+ minutes

mobeyone — Thu, 07 Aug 2008 12:13:16 GMT

Some of this is way over my head..

But if heat is causing the problem, can you not add a fan to the PCB? I have a DVD1 and dread this happening.. but would be nice to know if there is a fix instead of an overhaul because of a design flaw?

Ducks for cover....

Re: DVD1 - freezes after 30+ minutes

Beogen — Thu, 07 Aug 2008 10:52:28 GMT

Thanks for the ideas, guys!

I'm not giving up at this moment, the small IC in front of the laser seems too hot and this is the preprocessor and laser supply unit. It looks like this could be the one, because when the DVD is freezing up, the laser unit skips one chapter after each other like it lost its way.

It is easier throwing the DVD1 in the garbage but for me it's still a challenge making things better like the good old Philips saying.

The big STi5505 IC (DVD decoder) on the back also gets a little hot so I'll also try to cool it off.

Re: DVD1 - freezes after 30+ minutes

nobby — Thu, 07 Aug 2008 05:51:52 GMT

ok, on a different tack then ... wait until it fails and then use a freezer spray which will have a very fine jet to cool down and work the problem from the other end.

my feeling is that this is probably not a chip fail ... but a systematic PCB soldering fail on one of the large BGA packages ... it would be nice to think that the PCB could be reflowed through an oven (not the one in your kitchen) and then problem solved.

Re: DVD1 - freezes after 30+ minutes

Dude1 — Wed, 06 Aug 2008 15:45:07 GMT

I admire your determination here! The mech does get too hot - i know this for a fact as i have had first hand information on this. When getting hot, doesnt necessarily mean that the IC is getting really hot - small changes in internal temperatures to some IC's make a huge difference. The new board was better designed...for cooler running and better information delivery.

Give up on a home repair, unfortuantly these don't work.

Re: DVD1 - freezes after 30+ minutes

Beogen — Wed, 06 Aug 2008 13:12:10 GMT

Good idea but a little difficult since the IC's are close to each other and on both sides. The reacheability isn't that great.

Re: DVD1 - freezes after 30+ minutes

nobby — Wed, 06 Aug 2008 11:23:41 GMT

Why not try heating the different parts of the board with a heat gun or hair drier to see if it fails quicker.

Re: DVD1 - freezes after 30+ minutes

Beogen — Wed, 06 Aug 2008 11:01:36 GMT

Anyone?

Re: DVD1 - freezes after 30+ minutes

Beogen — Tue, 05 Aug 2008 13:25:33 GMT

Dude1:
Bang always denied that this was an issue, but in reality i saw a lot of this issue.
Problem is that the Philips mech gets too hot - this si generally related to one of the IC's getting too hot. Some clever repair agents managed to intriduce large heat sinks to manage the issue. I am sure someone on the forum knows a clever reapir agent close to you and might be willing to assist.
Nothing to do with your disks - def a issue with the DVD1. The later units had some differing components to deal with this issue - but some still managed to get a bit hot. The reason repair agents want to replace the mech is that Bang wants an upgraded board to be replaced so the issue stops.

I'm facing the same problem but in order to solve it I would like to know which IC or IC's are affected by the heat. I made a picture of both PCB sides to make things clear but I don't see how to attach these pictures (I don't have an URL).

When removing the top cover from the DVD1 and placing it outside my cabinet it kept working approx. double the time then when it was still on, so a heat issue is very likely the cause.

Thanks!