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Old 14th June 2005, 03:14 AM   #1
wrl is offline wrl  United States
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Default DVD read error

Hello,

I have a Denon ADV-700 DVD/home theater combo and it will no longer read DVD's. It reads CD's fine, but the laser will can seem to find where to start for DVD's. Does anybody have any suggestions on how I can fix this?

My thoughts: Either I have to replace the whole transport/optical assembly, or maybe I can just replace the optical pickup.

Does anyone have any other suggestions or comments about what I could try. Also if it might be some other problem?

Thanks,

Wes
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Old 15th June 2005, 11:54 AM   #2
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My El-Cheapo DVD player does the same. Cleaned the lens 500 times, greased the laserrails, still nothing. I'm going to buy a new one, these SMD-PCB's are beyond my capabilities. But your player isn't El-Cheapo I guess....

Not much help, I know.. Good luck!
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Old 16th June 2005, 11:25 PM   #3
wrl is offline wrl  United States
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Default Any other suggestions?

I got in touch with Denon tech support and got the part number. They said I'd have to replace the whole transport.

Before I order this $100 part, does anybody have any other suggestions about what could be to cause. I just want to make sure that replacing the whole unit will fix the problem and its not some firmware or hardware problem further up the line.

Has anybody fixed this kind of problem before?

Thanks,

Wes
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Old 17th June 2005, 12:14 AM   #4
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Default denon

clean the laser lens with alcohol and a q tip ,gently
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Old 21st June 2005, 04:39 AM   #5
wrl is offline wrl  United States
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Thanks, tenderland

I tried that, but it didn't fix the problem. Does anybody know if I can just order the laser and replace that. I've found a few sites that sell them, but they are all overseas.

Denon told me that I would have to order the entire transport, but I'm not sure why that would be necessary


-Wes
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Old 21st June 2005, 04:34 PM   #6
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Default transport

most units I have erplaced in warranty have come with the entire transport. Look on the pick up itself and see who makes it. I have seen dennon use Sony transports before. If it is a Sony look for a KhM number EG. KHM-240AAA. Some are aval at MCM electronics
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Old 22nd June 2005, 11:16 PM   #7
jaycee is offline jaycee  United Kingdom
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See if theres a laser intensity adjustment preset on the laser itself. Try carefully adjusting it (be warned, excessive adjustment will knacker the laser, but if its that or a new transport you have nothing to lose). I've fixed quite a few cd players this way.
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Old 25th June 2005, 05:56 PM   #8
wrl is offline wrl  United States
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The laser unit is a HOP1000. I think thats hitachi. Do you have any suggestions about where to look for the intensity adjustment? Is it just a pot somewhere on the laser assembly?

-Thanks,

Wes
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Old 27th June 2005, 09:05 AM   #9
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yes, it is a small pot on the side of the optical circuitry,near the ribbon cable. I've tried adjusting it on a dvdrom but it doesn't work for me. just have to replace the optical pickup which costs $20 here.
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Old 7th August 2005, 05:48 PM   #10
Nampton is offline Nampton  Hong Kong
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I've got an ADV-700 that isn't reading properly either - image keeps freezing up after around 5 minutes of playback. Removed the hop-1000 pick-up and saw two pots - does anyone know which one controls laser intensity.

Wes - managed to fix yours yet?
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