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Louie, Technician
Category: Consumer Electronics
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Experience:  25+ yrs. experience in the field and 5+ yrs. online, down to component level.
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Sony vpl cs6 data projector will not turn on. No green light

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Sony vpl cs6 data projector will not turn on. No green light when power switched on. Power lead is working.

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Customer: replied 7 years ago.

No lights appear on projector when plugged in and switched on. The power lead is operative. It is not possible to operate by pushing the on/off button on top. Is there an internal fuse?

Hi and welcome to the site,

Initially, yes, there is an internal 6.3A fuse. It would be on the GA power supply board. Other than the fuse, a relay is responsible for actually switching ON the Sony VPL-CS6 Projector. If the built-in protection has detected a fault and to prevent further damage, the relay drive would be stopped and the Sony will not power on. It must be noted that if the break on the fuse is dark and marked with burns, then it would indicate that there are other components that has faulted.

Options then are:
  • consider a DIY (do-it-yourself) repair if and only if comfortable working with electronic components & circuitry, use of a DVM/VOM, a soldering iron/station and safe practices with electrically powered devices. Access to a Service Manual or at the very least, a schematic diagram would be a necessity;
  • should you be uncomfortable with a DIY, perhaps your best bet would then be to consult with and/or seek the services of an authorized Service Center or a qualified professional.

Offhand, if a DIY is being considered, please reference the schematic diagram of the GA power supply board below.


Good luck and thank you for asking.

Edited by Benimur on 6/28/2010 at 7:40 PM EST
Customer: replied 7 years ago.

Is the fuse soldered on or just a "push fit"?


Are service manuals easily available?


Thanks for schematic


There is a snap fuse holder on one corner of the GA board near the AC IN connector.

If acceptable, I could upload to an off site server a pdf copy of the Service Manual. Next post would have the link.

Edited by Benimur on 6/28/2010 at 8:08 PM EST
Please click here.

Edited by Benimur on 6/28/2010 at 8:30 PM EST
Customer: replied 7 years ago.

Thank you that would be very helpul.


I would then attempt DIY repair as otherwise the projector would just be thrown away

I understand and glad to be of help.

Edited by Benimur on 6/28/2010 at 8:50 PM EST
Customer: replied 7 years ago.
<p>Thanks for the PDF manual. One last question. </p><p> </p><p>Is the relay repairable? </p><p> </p><p>Will it just have stopped the projector powering up and if a fault is corrected would it just work correctly in future.</p>
It would be very rare for the coil of the relay to go bad, often, relay problems are limited to pitting of the contacts; uneven wear & tear or scorched marks. And yes, the contacts could be repaired by using a fine needle file or fine sandpaper.

The relay acts as the main physical switch. The transistor that drives the relay waits for a signal from the logic circuitry before it will trigger the relay to energize hence turn on the projector.

Edited by Benimur on 6/29/2010 at 1:29 AM EST
Louie, Technician
Satisfied Customers: 12578
Experience: 25+ yrs. experience in the field and 5+ yrs. online, down to component level.
Louie and 3 other Consumer Electronics Specialists are ready to help you
Customer: replied 7 years ago.

Thank you for your advice. I am now in a position to try the DIY answer



Appreciate the ACCEPT.