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David Chan
Reply with quote  #1 

The receiver turns on without light. Everything ok, just light off. The light bulbs were on and one day all off. Just what to know how to fix it. I live in HONG KONG, quite difficult to find a experienced and qualified technician. Thanks in advance.

Keeper
Reply with quote  #2 
Quote:
Originally Posted by David Chan

The receiver turns on without light. Everything ok, just light off. The light bulbs were on and one day all off. Just what to know how to fix it. I live in HONG KONG, quite difficult to find a experienced and qualified technician. Thanks in advance.

Check a 3A fuse on board F-2625

David Chan
Reply with quote  #3 
I'll try. The 7070 still sounds great and just only light off. Also, does the fuse is normal fuse or audio one. thanks.
Keeper
Reply with quote  #4 

Quote:
Originally Posted by David Chan
I'll try. The 7070 still sounds great and just only light off. Also, does the fuse is normal fuse or audio one. thanks.

The fuse is a normal fast fuse.

David Chan
Reply with quote  #5 
hi, replaced the fuse but light still off. the sound seems better now, may be the replaced fuse. any idea? thanks again.
Keeper
Reply with quote  #6 

Quote:
Originally Posted by David Chan
hi, replaced the fuse but light still off. the sound seems better now, may be the replaced fuse. any idea? thanks again.
No the fuse is for light only. You have to trace the voltage from points 72 (hot) and 73 (ground) on board F-2625.

It's helpful if you have the schematic. If you don't have you can get the complete service manual including schematic as well as all adjustments and settings at

http://www.obsinc.us/Dep_VOVS_Literatures.htm

Click on service manual and do a search for 7070. 

 

David Chan
Reply with quote  #7 
I already have it. so could you tell me the correct voltage. i'm really idiot to electronics. or i should find a shop to fix it. thanks again.
Keeper
Reply with quote  #8 

Quote:
Originally Posted by David Chan
I already have it. so could you tell me the correct voltage. i'm really idiot to electronics. or i should find a shop to fix it. thanks again.

It's easy to do for a shop. If you feel unsure let them do it.

Don't forget to bring the service manual together.

stan armstrong
Reply with quote  #9 
Try soldering the joints on the circuit board the lights are in.  It will come out of the unit part way.  Carefully resolder the the joints.  Mine did a similar thing.  Once I resoldered it stopped and the lights
are on full and bright when unit is turned on.
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