Think I blew it replacing laser unit - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 4th June 2005, 04:42 PM   #1
kora is offline kora  Ireland
diyAudio Member
 
Join Date: May 2005
Location: On a hill
Default Think I blew it replacing laser unit

Replaced the laser unit (Philips VAM 1201) of a troubled Marantz 4000 today. It's my first attempt.
When powered on the display says READING then OPEN and the drawer opens; when made to close, the display says READING, then OPEN again and the drawer re-opens. Inserting a CD has no effect on this behaviour.
I've rechecked the wiring and connectors several times, and used antistatic procedures throughout. Could I have damaged something eg. laser motor when soldering?
  Reply With Quote
Old 4th June 2005, 04:52 PM   #2
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Are you sure the tray is well in place? On some laser units one has to remove a solder bridge to make it work, forgot about the 1201 though.

/Hugo
  Reply With Quote
Old 4th June 2005, 06:26 PM   #3
kora is offline kora  Ireland
diyAudio Member
 
Join Date: May 2005
Location: On a hill
You've given me a slim hope, netlist, that it may not be a disaster. The tray in fact doesn't look as if it lines up properly at the back when closed, as if it's on the wrong cog. When I was dismantling it, before I discovered that the front lip of the tray just slides up and off to allow the whole unit to be removed backwards, I'd been following someone's experiences with a Marantz CD63 and trying to release the tray by pulling it straight out, and wondering why I couldn't find the drawer stop. I might have dislodged it then. I'll let you know how I get on, and thanks.
  Reply With Quote
Old 4th June 2005, 06:30 PM   #4
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Bu all means take your time. Some trays can be very tricky to reassemble.

/Hugo
  Reply With Quote
Old 4th June 2005, 06:47 PM   #5
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
Sorry to hijack, but have you seen my thread in this forum? My (quite expensive, to me) Marantz DVD player is playing up. I'm desperate for help.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 5th June 2005, 01:27 AM   #6
kora is offline kora  Ireland
diyAudio Member
 
Join Date: May 2005
Location: On a hill
You wouldn't want my advice richie00boy, but you have my sympathy.

As for my problem, I'm pretty sure the tray is out of place on its tracks and needs to move 5 or 6mm backwards, but I can't as yet find a way of doing it by adjustment rather than force. I'll fiddle on, and hope for inspiration.
  Reply With Quote
Old 5th June 2005, 10:34 AM   #7
kora is offline kora  Ireland
diyAudio Member
 
Join Date: May 2005
Location: On a hill
Take a bow, netlist. I forced the tray off its tracks a few times and altered its starting position on the main cog and finally got it to close the whole way. Reads and plays like new! Now I can afford to orgy.
  Reply With Quote
Old 5th June 2005, 05:30 PM   #8
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003


/Hugo
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
nad 510 laser unit pipedreams Digital Source 2 8th January 2009 11:27 PM
Which laser unit for HK HD740? hiwiho Digital Source 0 26th May 2007 04:45 PM
cd17 ki laser UNIT sq225917 Parts 2 14th December 2005 08:30 PM
Laser unit used in Yamaha CDX-700 Dumbledore Everything Else 8 7th December 2005 03:06 PM
Replacing a CDM9/65 laser unit Sarion Digital Source 22 17th April 2004 04:57 PM


New To Site? Need Help?

All times are GMT. The time now is 08:30 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2