Film-Tech Forum ARCHIVE: Strange DTS Problem

my profile | my password | search | faq & rules | forum home

»	Film-Tech Forum ARCHIVE » Operations » Film Handlers' Forum » Strange DTS Problem (Page 1)

This topic comprises 2 pages: 1 2

Author

Topic: Strange DTS Problem

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 01-30-2002 10:38 AM

Here is an excerpt form one of my customers e-mails regarding this.

"Well... we are having problems with it again! We previewed it
> Thursday in DTS and it sounded fine, but today for some reason it just
> sounds like rumble. I tried to switch it back to stereo and it wouldn't
> let me until I completely turned off the DTS. I believe the disks are
> fine, since nobody has touched them and it played fine for the last
> couple of days. Anyway thought you would love to hear that."

Could this be the DC convertor failing? The unit has just recently had the upgrade kit installed in it too. Or just bad disks?
Mark @ GTS

| IP: Logged

Karen Hultgren
Master Film Handler

Posts: 492
From: Agoura Hills, CA, USA
Registered: Mar 2000

posted 01-30-2002 12:20 PM

Mark,

"Sounds like rumble" That's odd! The only time I've ever heard that complaint is when the film plays in analog and the sound head picks up the timecode track. Other than that, I've never heard of "rumble" (unless the DTS subwoofer is too adjusted too high).

Are they getting dialogue when in DTS?

The other thing that concerns me is the DTS unit locking up the CP. Obviously, it should not do that. You should be able to push and enable any format button when the DTS is on.

Is this on a DTS-6D? If yes, they could have a bad D536 board.

Please send me an email so we can discuss this further.

Karen at DTS
khultgren@dtsonline.com

| IP: Logged

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 01-30-2002 04:35 PM

Hi Karen,
Yes, its a 6D that just had the upgrade done to it. The film is Spy Games.
Thanks in advance for any help you can provide us.....
Mark @ GTS

| IP: Logged

Karen Hultgren
Master Film Handler

Posts: 492
From: Agoura Hills, CA, USA
Registered: Mar 2000

posted 01-31-2002 02:08 PM

Mark,

I am looking forward to your email.

Karen at DTS
khultgren@dtsonline.com

| IP: Logged

Paul G. Thompson
The Weenie Man

Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000

posted 01-31-2002 10:46 PM

Is this a "rumble" or a "buzz"? Does it sound like a 30HZ buzz?

I have has the 30hz buzz thing happen on several units, and all of them were shipped back to DTS for repair.

| IP: Logged

Karen Hultgren
Master Film Handler

Posts: 492
From: Agoura Hills, CA, USA
Registered: Mar 2000

posted 02-01-2002 11:53 AM

Mark,

The problem you described is NOT a disc issue. Please send me an email so we can discuss it further.

Karen at DTS
khultgren@dtsonline.com

| IP: Logged

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 03-19-2002 08:14 PM

This turned out to be a bad time code reader.
Mark @ GTS www.getgts.com

| IP: Logged

Steve Kraus
Film God

Posts: 4094
From: Chicago, IL, USA
Registered: May 2000

posted 03-19-2002 09:16 PM

Okay, then how did a bad TC reader prevent them from changing formats on the CP?

| IP: Logged

Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99

posted 03-19-2002 10:05 PM

Yes he replaced the reader with a cat701 and and a 650 and the problem went away

| IP: Logged

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 03-19-2002 10:28 PM

No, Actually a Sony DFP-2000!

Well as it turns out they didn't have a clue as to what was really up with the thing. The LED was flickering and causing the TC to come in to the processor intermittently. You should have heard what it sounded like!! Realy wierd.
And this at a theatre that I just removed the framing intermedeiate gears from in the X-L's. Now that have to frame em up right. I'll put them back on Saturday before I leave though.
Mark @ GTS www.getgts.com

| IP: Logged

Steve Kraus
Film God

Posts: 4094
From: Chicago, IL, USA
Registered: May 2000

posted 03-20-2002 11:37 AM

Naw...give them the Disney (no-framing) version of the Ballantyne.

| IP: Logged

Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99

posted 03-20-2002 01:58 PM

Framing controls are for amateur projectionists. No professional operator needs them.

Mark, just last week I came across a dts unit that was doing all sorts of weird things like you described. It was finally tracked down to a faulty crossover card, of all things. The card would oscillate and throw the amplifier into clipping, which (I am assuming) caused AC line fluctuation of some sort and wreaked havoc on the dts player. After the card was changed out, the dts player returned to normal.

(Thanks to Karen for sending me firmware updates that were needed anyway.)

| IP: Logged

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 03-20-2002 09:14 PM

Brad,
Weremoved one of the framing gears today!! You shoulda been there.
We decided for now to remove one at each site up here in Idaho and see if they learn it correctly.
That was a really wierd problem with the x-over cards. I know that Edwards went through a spell with bad x-overs that were blowing HF drivers all the time.
Mark @ GTS

| IP: Logged

Chris Byrne
Expert Film Handler

Posts: 102
From: Kirwan, Australia
Registered: Jan 2003

posted 01-15-2004 06:26 PM

Much on the same topic.

I had a DTS unit start making a 'buzzing' sound yesterday, much like a sticking contactor makes. The buzzing was very loud in the auditorium and was fixed by selecting analog sound.

It was 40 minutes into a feature that had played with the same discs for 2 weeks.

This is the first time this has happened and tech support suggested that I put a surge protector on the unit, to which I have.

Has anyone had this fault? Could a faulty ROM drive cause this?

| IP: Logged

Paul G. Thompson
The Weenie Man

Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000

posted 01-15-2004 11:18 PM

Chris, in my case it was the DSP board.

| IP: Logged

All times are Central (GMT -6:00)

This topic comprises 2 pages: 1 2

Printer-friendly view of this topic

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.