Question about Samsung DVD-HR720 DVD Recorder

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Power supply down

Dear,
Who has experience with a power supply down failure of the DVD-HR720
No clock or lights visible anymore, no internal power supply available.
Who can help?
Thanks a lot
Jan

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  • Anonymous May 12, 2009

    Yes I have the same problem

    Pat

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My samsung dvd-v1000-vcr do not turn on

Posted on Aug 27, 2008

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Power supply


Is this by chance a computer power supply? Does the computer come on when the power button is pushed? If so, then the fan itself is bad- bearings are stuck/lubricant dried up etc. Replacement fans are readily available at low cost.

if the power supply is dead, then likely an internal component has failed. If you have some tech savvy, a voltmeter, soldering/desoldering items & skill, you may be able to repair the supply. A very common failure is one or more electrolytic capacitors, and these may show visible signs of failure- bulged out end, and/or leakage.

ATX style power supplies, used in most machines of the past 8-10 years have both a standby and main section. The standby supplies a low current +5 volts to a small portion of the motherboard. When the pwr button is pushed, the main section comes on, and supplies +5 (Red wires), +12 (Yellow wires), +3.3 (Orange wires), -5, -12. Look here for this info http://pinouts.ru/Power/atx_v2_pinout.shtml

Voltages are precisely regulated, and any substantial deviation (more than a few 10ths of a volt) indicate a problem, especially on the +5 & +3.3 lines.

Anyway, you could make these checks. Replacement electrolytics- use the Panasonic FC series (designed for switching power supplies) available from Digi-key electronics, or equivalents (Mouser electronics another possible supplier).

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The first is rather easy. You will have to finish the DVD to get it working. After copying a title, finish the DVD and put in you computer's DVD player. Either the film should start to play or you will be prompted whether you want to show the contents or other options. If either of this happens, you are good to go and you can copy the Video_TS folder which should be visible to your hard drive. Done it several times.
The second solution is something I try to figure out myself but it seems DV in is really IN and not OUT....

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