- Panasonic DVD Recorder model DMR-ES20 Problem - 8 Updates
| John-Del <ohger1s@gmail.com>: Nov 15 08:40AM -0800 On Thursday, November 15, 2018 at 11:30:06 AM UTC-5, olaf wrote: > It goes on, does absolutly nothing, if I press the off-button for > 10second it show "BYE" in the VFD and switch off. > I know that the powersupply is working. How? If you're going on that it's outputting voltage, that only proves the power supply is not dead, but that's not enough. I've seen these sag and recover so quickly that you won't see it on a DMM. I repaired several of these Panasonic recorders with a cranky smps or buck converters that refused to complete the boot. |
| Terry Schwartz <tschw10117@aol.com>: Nov 15 10:27AM -0800 Please do not make suggestions, as you are already an expert apparently. Yet you can't fix it without knowing EXACTLY what someone else did to fix it. Pompous ass. There are dozens of us here with many MORE years of troubleshooting experience. Myself included. However, I'm sure as hell not going to help you, as that seems to be exactly what you want. You posted about this a long time ago. Still not fixed? I see your years of experience have yet to pay off. |
| olaf <olaf@criseis.ruhr.de>: Nov 15 07:37PM +0100 >How? If you're going on that it's outputting voltage, that only proves the power supply is not dead, but that's not enough. I've seen these sag and recover so quickly that you won't see it on a DMM. But I think I would see it with my 200Mhz HMO2022. .-) > I repaired several of these Panasonic recorders with a cranky smps or > buck converters that refused to complete the boot. I agree, if someone would told me anything like this my first thought would be the power supply, too. But I checked it VERY carefully. But sometimes, only sometimes it is not the power supply... Olaf |
| Michael Black <mblack@pubnix.net>: Nov 15 03:09PM -0500 > see how many hours. Note: If I hold the power button for 10 seconds on the > unit, the display changes back to the flashing "12:00 AM". However, I still > can NOT use this recorder. You asked about this back in July, got a bunch of answers. I can't remember if you ever posted again in that thread, but if ever there was a time to resurrect a thread, it is when you started it and have a followup. I think you got decent answers back then, yet you post like you've never been here before. And the people most likely to announce their capability are often the ones who aren't, they just assume they'll get a better answer if they claim to be a "service tech" or some "authority". Your post suggests otherwise, and you don't seem that capable if you insist on replies only from people who have experienced the exact same thing. Go back and read the previous thread, maybe there is some help there. Michael |
| John-Del <ohger1s@gmail.com>: Nov 15 12:51PM -0800 On Thursday, November 15, 2018 at 1:45:05 PM UTC-5, olaf wrote: > seen these sag and recover so quickly that you won't see it on a > DMM. > But I think I would see it with my 200Mhz HMO2022. .-) As long as you don't run it faster than 10ms or so. Lots of techs get fooled by a quick glitch that doesn't disturb their DMM's update count. On analog circuits you may not notice it, but in digital I've seen this cause an endless system reset cycle. Wondering if OP understands that.. |
| jaugustine@verizon.net: Nov 16 07:32AM -0500 <SNIP> >thing. >Go back and read the previous thread, maybe there is some help there. > Michael Hi Michael, Here is one of the replies I received in that previous post from a "Lee": "Yes. Bad capacitor. Replacing it fixed it" I asked "Lee" which capacitor? He NEVER responded. John . |
| "pfjw@aol.com" <peterwieck33@gmail.com>: Nov 16 05:51AM -0800 John: Consider the analogy of the shotgun. The reply you received was perfectly valid. Your response and expectation was not. Peter Wieck Melrose Park, PA |
| John-Del <ohger1s@gmail.com>: Nov 16 07:44AM -0800 > I asked "Lee" which capacitor? He NEVER responded. > John > . He may not have made note of the cap. I don't make notes unless the problem was something that took a lot of time or was really non intuitive (like a 100K leakage on one of the front panel switch contacts - yep, had one of those recently) And you assume that *your* recorder has the same bad part as Lee or someone else had the exact problem as you? It might, but it doesn't have to be necessarily. What if he told you the location and that didn't fix it? What then? I've seen several problems in these Panasonics cause the constant 00000000, including my own DMR-EZ475V. I already told you that the constant 0000000 on ac plug-in means incomplete software loading or corrupt software. If the software isn't corrupted (I haven't seen a Panny do this), then you have to figure out why it's not finishing the boot. You're an experienced tech and the manual is on line. What more do you need? It's not like it's intermittent. BTW, you can buy a working example on ebay for like $60 U.S. |
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