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Pete
Pete, Engineer
Category: Recorders and Players
Satisfied Customers: 17941
Experience:  Over 16 years experience installing and repairing electronics.
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Panasonic dmr ez28 DVD recorder. Turns itself off when

Customer Question

panasonic dmr ez28 DVD recorder. Turns itself off when loading a DVDE.
JA: What's the make/model of your device? How old is it?
Customer: panasonic dmr ez28 approx 6 years old
JA: How long has this been going on? What troubleshooting have you tried?
Customer: Just started. tried unplugging it.
JA: Anything else you want the electronics expert to know before I connect you?
Customer: Is there a firmware update to correct thisz/
Submitted: 8 months ago.
Category: Recorders and Players
Expert:  Pete replied 8 months ago.

Hello,
I am Pete, and I'll be happy to assist with your question today.

Customer: replied 8 months ago.
Do you know what's causing my DVD recorder to shut off when reading a DVD?
Expert:  Pete replied 8 months ago.

What do you mean by "shut off"?

Does it lose power?

What is showing on the display when this happens?

What type of DVD are you trying to read? (one you burned at home, or a commercial, factory-burned disc?)

Can it play music CDs ok?

Any unusual noises from the DVD recorder when trying to read a DVD?

Customer: replied 8 months ago.
Shut off means lose power. The display reads "bye" as it does when it shuts off ( or loses power)l
It shuts off on either DVD or CD ( but this is intermittent - meaning after many tries it did stay on an play normally a couple times. But I can't get it do it again).
No noise at all.
Customer: replied 8 months ago.
Oh, yes. Noise such as reading DVD clicking, yes. It searches - reading for several minutes until it shuts off. No unusual noises.
Expert:  Pete replied 8 months ago.

Ok, this is a fairly common fault on these DMR models, and it is usually caused by a faulty voltage regulator IC in the power supply.
A local repair tech can replace it for approx. $50.

Customer: replied 8 months ago.
What is the voltage regulator IC designation? I could replace it if I can find it.
What if that doesn't fix it?
Customer: replied 8 months ago.
I assume the VR is not regulating so the wrong voltage is causing the problem. What should that voltage be?
Customer: replied 8 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Pete replied 8 months ago.

The power supply board outputs four voltages (12Vdc, 5.8Vdc, 3.8Vdc, 1.5Vdc) as long as it is plugged in and turned on.

Customer: replied 8 months ago.
I asked what the IC designation was. What's the number of the most likely IC to fix the problem?
Also could you give me a link to a reliable site to order a repair manual?
Customer: replied 8 months ago.
IC or regulator)
Customer: replied 8 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Pete replied 8 months ago.

Sorry I don't have a service manual for this particular model to hand.

Could you attach a photo of the power supply board here?

The service manual is available from

https://www.tradebit.com/filedetail.php/129777193-panasonic-dmr-ez28-ez28p-ez28pc-service-manual-repair

Customer: replied 8 months ago.
Pete,
There are 5 Regulator ICs to choose from. How do I send a picture? I don't see an attach symbol.
Can I use your email address?
Expert:  Pete replied 8 months ago.

You should see an Attach File link - it is preferable if you use it so that other experts on this site can also see it and review and input any useful information.

If you don't see a link then go ahead and email it directly to me at***@******.***

Customer: replied 8 months ago.
It's called + Add files. Tell me if you need more pics.
Expert:  Pete replied 8 months ago.

Thanks for that, this board is different than those I am familiar with, so I will opt out and see if another tech has a service manual to assist you further with this.

Customer: replied 8 months ago.
Pete,
Thanks for your help in finding someone else. How long do I wait?