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Goodmans GDVD300R DVD Recorder - failure?I have a Goodmans GDVD300R DVD Recorder which started off with garbled sound. I now find that it will quite happily seek to read a disk all day without finding it.
There is also a problem with the “open, close” (eject) function often fails.
Chippy August 2006
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Click here if you can answer this question |
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to answer the open/close problem, i have discovered that the magnetic field is to strong on the centre spindle, thus when there is no dvd in, its too strong and there can not open. What i have done is to make sure a dvd is left in the dvd recorder, this some how is just enough space to allow it work when required to open.
but now i have the power supply problem, but i dont think this is related to the open/close problem.
best of luck...
D GOODWIN September 2007 |
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Lets me start a fresh, I bought my GDVD300r as a B grade on eBay about 2 years ago.
Firstly, all I seemed to have problems with intermittent different results whilst recording discs, this was quickly cured by dusting off the laser lens with a clean cotton bud.
Secondly, the fan was very noisy, this was due to a broken fan blade, so I modified the mounting and fitted an old CPU fan in its place. It is still noisy but not as bad as it was.
Thirdly, the tray started to refuse to open, and then my son found that by tapping the front of the tray at the ‘Open’ event, would help the tray to open. I replaced a drive belt as explained before (It is a 25mm diameter by 1.2mm square section belt, available from Cricklewood Electronics on the WEB) (Not 20 mm as I said in my first response)
Fourthly, later the unit started to present intermittent problems on power-up. The symptoms would cycle the ‘Hello, Setup’ messages with the display dimming as the DVD drive tried to access a disc. After reading the comment about the power supply, I had a look and saw that the electrolytic capacitor (C19) had a domed top indicating that it was in stress. I found a replacement on the Maplin Electronics WEB-site (1000uf 16v 105 degree C, part number DT69A) after replacing this capacitor, this appears to have brought the recorder back to a reliable condition.
After the reading article about temperatures, I am still concerned about the heat dissipation of the recorder. The power supply gets hotter when in standby than when it is recording or playing a disc, this is because the fan is only active when the disc drive is active. For now, I am turning the mains power off when the recorder is not required.
phillip.wilson2 January 2007 |
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I have one of these too.
I fixed the open / close door problem wjth a new 20mm drive belt.
it is located just under the front of the tray on the top of the drive.
Remove the lid, power up, eject the tray, remove the metal panel on top of the drive and it is there at the front of the case - easy.
phillip.wilson2 January 2007 |
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I've just been given one of these on an 'if you can fix it you can have it' basis. It's displaying very similar symptoms to yours. The first thing I've noticed is that the power supply voltages are all over the place - what should be 12V is 15+ volts, and what should be 5V is 4.1V. The 5V power supply in particular needs to be more or less exactly 5V.
In a nutshell, bad power suppply voltages can (depending on how wrong they are) cause all kinds of strange and/or intermittent faults. If you have a reasonable grasp of electronics, try changing all of the electrolytic capacitors on the power supply board - nine times out of ten that will fix a switched-mode power supply which is running, but wonky. They will usually need to be high temperature (105 degree) low-ESR types.
If you do have a reasonable grasp of electronics you will also know that working on switched-mode power supplies is a potentially lethal experience, so if you don't, DON'T.
-GrahamG
Graham G August 2006 |
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