JSD-60 random audio drop outs

[Gordon McLeod]

Can one generate a log from the JSD80/DTS XD10P

[Harold Hallikainen]

I don't think the JSD-80 has logging.

[Barry Floyd]

One week later update... reading through some of these comments whilst on vacation, I came back in on Thursday night and turned the output wattage down yet again to 0.1 watts. So far this weekend, we've run 4 shows through the JSD-60 without a single audio drop out. Might just be a fluke thing, but i do suspect it was the new high gain antenna with a turned up "way too high" FM transmitter.
Thank you all for all your help.

[Harold Hallikainen]

Great! I hope it keeps working. You may want to add the ferrite beads to cables connecting to the JSD-60. The RF interference possibility was an afterthought on my part, and that was for the JSD-100. I'm glad it appears to be a solution.

[Barry Floyd]

Well, it looks like my "audio drop out" issue isn't entirely related to RF power output of the FM transmitter. Playing Hotel Transylvania tonight, the sound dropped out twice. Same 4 second interval, but this time i was in the booth when it happened. While it was going through it's total silence episode, the "Bypass Mode" red led was flashing, and the display screen was scrolling through the various input / output modes (COAX, 8CH, TOS LINK, COAX, OPTION) then finally returned to 8CH. I pushed the "OPTION" button to take it out of "8CH" and it has remained in "OPTION" ever since with no drop outs. Probably going to call American Cinema Equipment on Monday to have them dial in and pull the logs.
I thought we had found the culprit, but I guess not.

Rick Cohen, text me the info on that possible spare if you can. You have my number.

[Harold Hallikainen]

On the JSD-100 that had the RF issue, it only occurred on loud audio. It would be interesting to know if the issue comes up at the same point in the movie every time which would again lead us to loudness versus RF. If you can reliably make it fail and then run with the transmitter off and see if it fails, that would be interesting. Also, the log in the JSD-60 is available by pointing a web browser at the unit.

Good luck!

[Barry Floyd]

I was able to pull the logs on the JSD-60 tonight. It looks like it's doing a system reset at random times. Temperatures look high as well.

JSD-60 Log File
Hostname: JSD-60_S1 S/N: 151 Address: xx.xxx.xxx.xxx
Record UTC Time JSD PDT GUI CDT Description
----- 4/8/2000 14:06:32 4/8/2000 06:06:32 4/8/2000 09:06:32

13977 4/1/2000 17:47:01 4/1/2000 09:47:01 4/1/2000 12:47:01 internal Fader change Fader changed to 7.0 due to format change
13978 4/1/2000 20:09:43 4/1/2000 12:09:43 4/1/2000 15:09:43 front panel Input change Input changed to NON/SYNC
13979 4/1/2000 20:09:43 4/1/2000 12:09:43 4/1/2000 15:09:43 internal Fader change Fader changed to 0.0 due to format change
13980 4/1/2000 20:11:49 4/1/2000 12:11:49 4/1/2000 15:11:49 internal Reset ErrorEPC=0x9d0144ec, EPC=0x9d014aac
13981 4/1/2000 20:11:49 4/1/2000 12:11:49 4/1/2000 15:11:49 internal Reset Reset due to watchdog timeout,
13982 4/1/2000 20:11:49 4/1/2000 12:11:49 4/1/2000 15:11:49 internal Temperature change Temperature now 41.28? C
13983 4/1/2000 20:11:50 4/1/2000 12:11:50 4/1/2000 15:11:50 internal Fader change Fader changed to 0.0 due to format change
13984 4/2/2000 13:44:17 4/2/2000 05:44:17 4/2/2000 08:44:17 internal Reset ErrorEPC=0x6a0efbac, EPC=0x9d014b20
13985 4/2/2000 13:44:17 4/2/2000 05:44:17 4/2/2000 08:44:17 internal Reset Reset due to power on, idle,
13986 4/2/2000 13:44:17 4/2/2000 05:44:17 4/2/2000 08:44:17 internal Temperature change Temperature now 20.51? C
13987 4/2/2000 13:44:18 4/2/2000 05:44:18 4/2/2000 08:44:18 internal Fader change Fader changed to 0.0 due to format change
13988 4/2/2000 14:12:06 4/2/2000 06:12:06 4/2/2000 09:12:06 internal Temperature change Temperature now 30.55? C
13989 4/2/2000 15:19:25 4/2/2000 07:19:25 4/2/2000 10:19:25 TCP4 Input change Input changed to Digital 8
13990 4/2/2000 15:19:25 4/2/2000 07:19:25 4/2/2000 10:19:25 internal Fader change Fader changed to 7.0 due to format change
13991 4/2/2000 15:22:14 4/2/2000 07:22:14 4/2/2000 10:22:14 front panel Input change Input changed to NON/SYNC
13992 4/2/2000 15:22:14 4/2/2000 07:22:14 4/2/2000 10:22:14 internal Fader change Fader changed to 0.0 due to format change
13993 4/2/2000 15:24:00 4/2/2000 07:24:00 4/2/2000 10:24:00 front panel Input change Input changed to Digital 8
13994 4/2/2000 15:24:00 4/2/2000 07:24:00 4/2/2000 10:24:00 internal Fader change Fader changed to 7.0 due to format change
13995 4/2/2000 15:33:58 4/2/2000 07:33:58 4/2/2000 10:33:58 internal Temperature change Temperature now 40.64? C
13996 4/2/2000 16:06:47 4/2/2000 08:06:47 4/2/2000 11:06:47 internal Reset ErrorEPC=0x9d0144f0, EPC=0x9d014aac
13997 4/2/2000 16:06:47 4/2/2000 08:06:47 4/2/2000 11:06:47 internal Reset Reset due to watchdog timeout,
13998 4/2/2000 16:06:47 4/2/2000 08:06:47 4/2/2000 11:06:47 internal Temperature change Temperature now 41.92? C
13999 4/2/2000 16:06:48 4/2/2000 08:06:48 4/2/2000 11:06:48 internal Fader change Fader changed to 7.0 due to format change
14000 4/2/2000 17:46:44 4/2/2000 09:46:44 4/2/2000 12:46:44 front panel Input change Input changed to NON/SYNC
14001 4/2/2000 17:46:44 4/2/2000 09:46:44 4/2/2000 12:46:44 internal Fader change Fader changed to 0.0 due to format change
14002 4/2/2000 17:47:47 4/2/2000 09:47:47 4/2/2000 12:47:47 front panel Input change Input changed to Digital 8
14003 4/2/2000 17:47:47 4/2/2000 09:47:47 4/2/2000 12:47:47 internal Fader change Fader changed to 7.0 due to format change
14004 4/2/2000 20:09:39 4/2/2000 12:09:39 4/2/2000 15:09:39 front panel Input change Input changed to NON/SYNC
14005 4/2/2000 20:09:39 4/2/2000 12:09:39 4/2/2000 15:09:39 internal Fader change Fader changed to 0.0 due to format change
14006 4/2/2000 20:10:22 4/2/2000 12:10:22 4/2/2000 15:10:22 front panel Input change Input changed to Digital 8
14007 4/2/2000 20:10:22 4/2/2000 12:10:22 4/2/2000 15:10:22 internal Fader change Fader changed to 7.0 due to format change
14008 4/7/2000 13:59:07 4/7/2000 05:59:07 4/7/2000 08:59:07 internal Reset ErrorEPC=0x6a0efbac, EPC=0x9d014aa4
14009 4/7/2000 13:59:07 4/7/2000 05:59:07 4/7/2000 08:59:07 internal Reset Reset due to power on, idle,
14010 4/7/2000 13:59:08 4/7/2000 05:59:08 4/7/2000 08:59:08 internal Temperature change Temperature now 24.95? C
14011 4/7/2000 13:59:09 4/7/2000 05:59:09 4/7/2000 08:59:09 internal Fader change Fader changed to 7.0 due to format change
14012 4/7/2000 14:01:24 4/7/2000 06:01:24 4/7/2000 09:01:24 front panel Input change Input changed to NON/SYNC
14013 4/7/2000 14:01:24 4/7/2000 06:01:24 4/7/2000 09:01:24 internal Fader change Fader changed to 0.0 due to format change
14014 4/7/2000 14:27:39 4/7/2000 06:27:39 4/7/2000 09:27:39 internal Temperature change Temperature now 34.95? C
14015 4/7/2000 15:19:25 4/7/2000 07:19:25 4/7/2000 10:19:25 TCP4 Input change Input changed to Digital 8
14016 4/7/2000 15:19:25 4/7/2000 07:19:25 4/7/2000 10:19:25 internal Fader change Fader changed to 7.0 due to format change
14017 4/7/2000 15:22:12 4/7/2000 07:22:12 4/7/2000 10:22:12 front panel Input change Input changed to NON/SYNC
14018 4/7/2000 15:22:12 4/7/2000 07:22:12 4/7/2000 10:22:12 internal Fader change Fader changed to 0.0 due to format change
14019 4/7/2000 15:23:38 4/7/2000 07:23:38 4/7/2000 10:23:38 front panel Input change Input changed to Digital 8
14020 4/7/2000 15:23:39 4/7/2000 07:23:39 4/7/2000 10:23:39 internal Fader change Fader changed to 7.0 due to format change
14021 4/7/2000 15:56:18 4/7/2000 07:56:18 4/7/2000 10:56:18 internal Reset ErrorEPC=0x9d0144ec, EPC=0x9d014b54
14022 4/7/2000 15:56:18 4/7/2000 07:56:18 4/7/2000 10:56:18 internal Reset Reset due to watchdog timeout,
14023 4/7/2000 15:56:18 4/7/2000 07:56:18 4/7/2000 10:56:18 internal Temperature change Temperature now 44.36? C
14024 4/7/2000 15:56:19 4/7/2000 07:56:19 4/7/2000 10:56:19 internal Fader change Fader changed to 7.0 due to format change
14025 4/7/2000 16:10:51 4/7/2000 08:10:51 4/7/2000 11:10:51 internal Reset ErrorEPC=0x9d0144f0, EPC=0x9d0002b4
14026 4/7/2000 16:10:51 4/7/2000 08:10:51 4/7/2000 11:10:51 internal Reset Reset due to watchdog timeout,
14027 4/7/2000 16:10:51 4/7/2000 08:10:51 4/7/2000 11:10:51 internal Temperature change Temperature now 44.74? C
14028 4/7/2000 16:10:52 4/7/2000 08:10:52 4/7/2000 11:10:52 internal Fader change Fader changed to 7.0 due to format change
14029 4/7/2000 16:11:00 4/7/2000 08:11:00 4/7/2000 11:11:00 front panel Input change Input changed to Option
14030 4/7/2000 16:11:00 4/7/2000 08:11:00 4/7/2000 11:11:00 internal Fader change Fader changed to 7.0 due to format change
14031 4/7/2000 17:08:07 4/7/2000 09:08:07 4/7/2000 12:08:07 front panel Input change Input changed to NON/SYNC
14032 4/7/2000 17:08:07 4/7/2000 09:08:07 4/7/2000 12:08:07 internal Fader change Fader changed to 0.0 due to format change
14033 4/7/2000 17:09:16 4/7/2000 09:09:16 4/7/2000 12:09:16 front panel Input change Input changed to Option
14034 4/7/2000 17:09:16 4/7/2000 09:09:16 4/7/2000 12:09:16 internal Fader change Fader changed to 7.0 due to format change
14035 4/7/2000 18:56:06 4/7/2000 10:56:06 4/7/2000 13:56:06 front panel Input change Input changed to NON/SYNC
14036 4/7/2000 18:56:06 4/7/2000 10:56:06 4/7/2000 13:56:06 internal Fader change Fader changed to 0.0 due to format change
14037 4/7/2000 18:56:44 4/7/2000 10:56:44 4/7/2000 13:56:44 front panel Input change Input changed to Digital 8
14038 4/7/2000 18:56:44 4/7/2000 10:56:44 4/7/2000 13:56:44 internal Fader change Fader changed to 7.0 due to format change
14039 4/7/2000 18:56:47 4/7/2000 10:56:47 4/7/2000 13:56:47 front panel Input change Input changed to Option
14040 4/7/2000 18:56:47 4/7/2000 10:56:47 4/7/2000 13:56:47 internal Fader change Fader changed to 7.0 due to format change
14041 4/7/2000 20:53:28 4/7/2000 12:53:28 4/7/2000 15:53:28 front panel Input change Input changed to NON/SYNC
14042 4/7/2000 20:53:28 4/7/2000 12:53:28 4/7/2000 15:53:28 internal Fader change Fader changed to 0.0 due to format change
14043 4/7/2000 20:54:15 4/7/2000 12:54:15 4/7/2000 15:54:15 front panel Input change Input changed to Digital 8
14044 4/7/2000 20:54:15 4/7/2000 12:54:15 4/7/2000 15:54:15 internal Fader change Fader changed to 7.0 due to format change
14045 4/8/2000 13:40:18 4/8/2000 05:40:18 4/8/2000 08:40:18 internal Reset ErrorEPC=0x6a0effad, EPC=0x9d014aa4
14046 4/8/2000 13:40:18 4/8/2000 05:40:18 4/8/2000 08:40:18 internal Reset Reset due to power on, idle,
14047 4/8/2000 13:40:18 4/8/2000 05:40:18 4/8/2000 08:40:18 internal Temperature change Temperature now 25.35? C
14048 4/8/2000 13:40:19 4/8/2000 05:40:19 4/8/2000 08:40:19 internal Fader change Fader changed to 7.0 due to format change
14049 4/8/2000 13:52:03 4/8/2000 05:52:03 4/8/2000 08:52:03 front panel Input change Input changed to NON/SYNC
14050 4/8/2000 13:52:03 4/8/2000 05:52:03 4/8/2000 08:52:03 internal Fader change Fader changed to 0.0 due to format change

[Harold Hallikainen]

Temperature does seem high. Can cooling be improved?

[Barry Floyd]

I can possibly replace that 1RU vent panel with a fan unit, or rearrange some components in the rack to movie it farther away from any heat sources.

[Ryan Gallagher]

I can possibly replace that 1RU vent panel with a fan unit, or rearrange some components in the rack to movie it farther away from any heat sources.

as fun as the CD based DJ setup looks... do you still use it? I would have thought everyone with needs like that switched to software/mp3 based now on a laptop.

Seems like lots of rack real-estate if you don't use it.

[Barry Floyd]

Actually we do use it every night. We use "Drive-In Radio" subscription music service for our pre-show music (2 hours each night). I used to be a "wedding DJ" in my life before the drive-in, so i several rack mount dual CD players not doing anything anymore.
My rack has a knock-out in the bottom specifically made for a fan. I ordered a fan earlier tonight to install later this week.

[Steve Guttag]

I'd get a space below the JSD60 too. Otherwise, it is the hottest thing in the stack of what is below it since it gets all of the heat from below plus what it contributes itself. A space above and below would be preferred. Moving air will also be improved if there is space above and below.

[Tony Bandiera Jr]

I see a trend in the logs that is concerning:

13982 4/1/2000 20:11:49 4/1/2000 12:11:49 4/1/2000 15:11:49 internal Temperature change Temperature now 41.28? C
13984 4/2/2000 13:44:17 4/2/2000 05:44:17 4/2/2000 08:44:17 internal Reset ErrorEPC=0x6a0efbac, EPC=0x9d014b20
13985 4/2/2000 13:44:17 4/2/2000 05:44:17 4/2/2000 08:44:17 internal Reset Reset due to power on, idle,
13986 4/2/2000 13:44:17 4/2/2000 05:44:17 4/2/2000 08:44:17 internal Temperature change Temperature now 20.51? C
13988 4/2/2000 14:12:06 4/2/2000 06:12:06 4/2/2000 09:12:06 internal Temperature change Temperature now 30.55? C
14010 4/7/2000 13:59:08 4/7/2000 05:59:08 4/7/2000 08:59:08 internal Temperature change Temperature now 24.95? C
14014 4/7/2000 14:27:39 4/7/2000 06:27:39 4/7/2000 09:27:39 internal Temperature change Temperature now 34.95? C
14021 4/7/2000 15:56:18 4/7/2000 07:56:18 4/7/2000 10:56:18 internal Reset ErrorEPC=0x9d0144ec, EPC=0x9d014b54
14022 4/7/2000 15:56:18 4/7/2000 07:56:18 4/7/2000 10:56:18 internal Reset Reset due to watchdog timeout,
14023 4/7/2000 15:56:18 4/7/2000 07:56:18 4/7/2000 10:56:18 internal Temperature change Temperature now 44.36? C
14025 4/7/2000 16:10:51 4/7/2000 08:10:51 4/7/200011:10:51 internal Reset ErrorEPC=0x9d0144f0, EPC=0x9d0002b4
14026 4/7/2000 16:10:51 4/7/2000 08:10:51 4/7/2000 11:10:51 internal Reset Reset due to watchdog timeout,
14027 4/7/2000 16:10:51 4/7/2000 08:10:51 4/7/2000 11:10:51 internal Temperature change Temperature now 44.74? C

The rapid changes of internal temperatures tells me that some component in the unit is running abnormally hot, which will cause any borderline electrolytic caps to change values (power supply?) and cause the bypass and resets. (And bad electrolytics causing excess ripple will cause chips to overheat and erratic behavior as well...so start with a full recap of the power supply at the absolute minimum.)

If it were me, I'd pull the unit, recap it, fire it up and check the entire board with a FLIR to pinpoint what is running hot. I am willing to bet the repair will be relatively simple.

I'd also reset the clock in it to get the dates and time correct.