Miraculous button makes things work again.

Jan 26, 2025 Last reply: 1 year ago 52 Replies

With email copy to Ed. Remove NONONO to email.



I posted in another thread about my philips DVDR3575H dvdr with harddrive that stopped working 2 or 3 months ago. (I've had medical problems since Dec 11, so I've not gotten much done. They are scheduled to end or be permanent by March 11. I'm optimistic.)



But I did buy another identical dvdr from ebay for 180 dollars (they had much cheaper, but the first one lasted me 15 years, and even though the one I just bought is also already 15 years old, I still think it will last 15 years. See, I'm optimistic.) And he was the only one who showed a tv with a picture on it in his photos.



I put it in and it worked fine for 2 of the 3 tv's I'm using now, but one 14" crt tv has much more static when text or commercials come on the screen than it did before. That is another topic. Anyone have any ideas? I'll post details if you do.



The topic here is what happened when I took apart the broken one. Since it was totally dead, I expected to find a problem with the power supply. I didnt' see anything burned out, and before I got out my meter, I looked around and in the middle of another board, iirc the tuner board, I found a little switch that looks like the middle ones in the back row here:

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little black sticks sticking up in the middle are made of plastic or rubber, so like Dorothy in the Wizard of Oz or Alice in Wonderland, I pushed it down. And the DVDR started working again!!!



How come they don't mention this in the owners manual for my model, and I found a service manual for a similar DVDR that doesn't say a word about it either. The switch is labeled Reset Sw.50 I can post the urls for the manuals if you want.



I haven't connected the output yet because I'd have to connect a RF modulator, but it shows On, Play, Rewind, none of which it did before. I'm 95% convinced it works as good as before. Unless it fails again? Likely? Why do they have this button if they're going to keep it secret?



Have you ever heard of a button like this before?


Glad to you you back. Hope you have a good resolution to your problem.

Seems a reset should be visible and marked. Maybe service people know of it and can charge you $150 for a board repair when it is just push of a button.

No, but I wish to hell I had one.

Thank you.

Maybe.

BTW, it was a different Ed who doesn't read usenet afaik, but I'm sure he's insterested.

Yes, Cursitor, we need a federal law to put a button like that on everything. .

That would be a major step forward for sure. Is it the laser diodes in these things getting weaker over time that's a principal cause of failure in these drives?

On behalf of hell, I'm here to answer your wishes. These buttons are not quite what you want, but should make suitable substitutes:

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You only need the button and not the switch. The switch only supports the button and otherwise does nothing useful.

Incidentally, it's acceptable to pray for a miracle. However, relying on a miracle to make your project work is not acceptable.

Dang it, Jeff, that last suggestion of yours is my go-to principal design technique. :(

To charge for the repair. Yes, I have seen this before, in some expensive machine. They told us in training about the secret reset button.

Miraculous design worked well for biblical prototypes but not so well meeting modern standards and safety requirements. Fortunately, miraculous design might soon be replaced by AI and other forms of traditional magic which does not require a miracle to function. If you are uncertain as to which approach is best for whatever you're building, I suggest you consider reverse engineering, patent infringement, cloning the competition, changing the specs, faking the test data, bribing the inspector and other modern engineering practices. It also helps to have a designated culprit or scapegoat available. Good luck.

Or the cunningly hidden additional thermal cutout or fuse.

It is what "repair cafes" are for - to mend things that are in fact perfectly OK but have been disabled by designed in obsolescence.

Yah, and some of them have a very specific finger dance to get it to reset.

Push and hold the reset button while plugging in the power cord until the green light flashes red 5 times. Release the reset button for 60 seconds then press the wifi button until the yellow led flashes red. Warning: Failure to follow these directions exactly will turn your $500 plastic piece of crap into a forever brick.

The dances are there usually when there is no dedicated reset button.

I recall one particularly painful reset method on an Andriod device that required holding in the tiny on/off switch and volume-down buttons for

120s. Your fingers start to go numb after about 90s.

Some things do that automatically.

Various smart speakers and some high end internet tuners for example when the protocols are changed and the makers CBA to support old kit.

That's incredible. (well, not really, since I believe you, so it must be credible.)

Where was this training, in the US or Spain? And if they tell people like you, what prevents the people they tell from telling everyone else? I guess they have to tell someone or it wouldn't be of any value, but I'd think they'd be worried everyone not doing repairs would be annoyed when they heard about this.

What made it break when it did, about 15 years after I bought it. Is it on a timer? Will it break again in another 15 years? Or maybe it's operational time, not calendar time. For maybe 10 years I recorded 3 hours a day and played back 3 hours a day. plus some more time watching what wasn't recorded. 3 or 4 years I left it running (and the hard drive spinning I guess) 4 or 5 days of the week. So it was running for

5 or 6 years total, I think. That's not very much imo, compared to 15 years elapsed time.

Both :-)

It was an international USA company. I'm not going to say the culprit, that product seems to be still active (which surprises me). Ah, no, the current supplier says it is EOL.

:-D

Who knows. But my guess is that any machine that has some sort of computer inside must have some reset method.

We recently did a box that uses the Raspberry Pi RP2040 cpu chip. The Pico board has two pushbuttons, reset and boot. We have a single push button accessed from outside our box, with a toothpick or something. A

1-second push is reset and a 10-second push is boot, where the thing goes into USB memory stick mode, for code upgrades.

A user can put a sticker over the pushbutton hole if he wants. Some do.

We have a horrible new Panasonic microwave oven. The BEEP is ear-splitting. The procedure to silence it is complex, and only works if the door is open.

[snip]

Does it keep forgetting it was silenced, so you have to do this procedure multiple times?

On one occasion, I muted an obnoxious beeper by stuffing chewing gum into it. There! Problem solved.

Jeroen Belleman

I break the piezo buzzer, if I can get at it.

We should arrest whoever invented piezo buzzers. Put him in a prison cell with 100 piezos.

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