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Philips LCD projector doesn't power up.

M

Mark

Jan 1, 1970
0
I just bought this LCD projector for a song as it doesn't power up.
Does anyone have a source for a service manual or schematic?

It's a SV10 Hopper. Circa 1999-2000. The philips service organisation
is pretty useless. I'm hoping there's third party support for this.

I've done rudimentary checking on it to this point, There's a line filter
on the input 120V that appears to pass voltage correctly, then a 120V to
395V module, that appears to only be passing 365V, which seems like a
pretty large variation. I'm suspecting bad/dry caps somewhere, but a
pretty close inspection of the power supply boards doesn't show any that
are bulging or leaking. Any ideas? Thanks.
 
A

Art

Jan 1, 1970
0
Lamp, Lamp Driver [ballast], protect circutiry or devices.
 
M

Mark

Jan 1, 1970
0
Art wrote:

I'm assuming, this is the order I should investigate in?

I don't even get a fan when I try powering it up. I'm not
sure how the lamp circuitry interacts with that.
Lamp, Lamp Driver [ballast], protect circutiry or devices.
Mark said:
I just bought this LCD projector for a song as it doesn't power up.
Does anyone have a source for a service manual or schematic?

It's a SV10 Hopper. Circa 1999-2000. The philips service organisation
is pretty useless. I'm hoping there's third party support for this.

I've done rudimentary checking on it to this point, There's a line filter
on the input 120V that appears to pass voltage correctly, then a 120V to
395V module, that appears to only be passing 365V, which seems like a
pretty large variation. I'm suspecting bad/dry caps somewhere, but a
pretty close inspection of the power supply boards doesn't show any that
are bulging or leaking. Any ideas? Thanks.
 
A

Art

Jan 1, 1970
0
If the lamp or ballast circuit is not functional it will shutdown, not
allowing the cooling fans,etc to even see the power up sequence. Presumption
is that you may have a protector device to the lamp or ballast circuit that
has failed, if so then you probably need to replace both items to make the
unit function. Cost of parts may precede your decision to purchase the lamp
let alone the ballast.
Mark said:
Art wrote:

I'm assuming, this is the order I should investigate in?

I don't even get a fan when I try powering it up. I'm not
sure how the lamp circuitry interacts with that.
Lamp, Lamp Driver [ballast], protect circutiry or devices.
Mark said:
I just bought this LCD projector for a song as it doesn't power up.
Does anyone have a source for a service manual or schematic?

It's a SV10 Hopper. Circa 1999-2000. The philips service organisation
is pretty useless. I'm hoping there's third party support for this.

I've done rudimentary checking on it to this point, There's a line
filter
on the input 120V that appears to pass voltage correctly, then a 120V to
395V module, that appears to only be passing 365V, which seems like a
pretty large variation. I'm suspecting bad/dry caps somewhere, but a
pretty close inspection of the power supply boards doesn't show any that
are bulging or leaking. Any ideas? Thanks.
 
M

Mark

Jan 1, 1970
0
Starting to sound like if it's not caps or something simple like that,
it's a good parts machine for my other one? Bulbs are about $310.
I don't think I'll even try buying a system board the size of the power
supply. If I could even get it, it'd be far more than it's worth.
It's a good basic machine, but not high end by any means.

Can you point me in the direction of a good dissertation on metal halide
ballast circuits? I don't have a single schematic on something like this.

Thanks,
Mark
If the lamp or ballast circuit is not functional it will shutdown, not
allowing the cooling fans,etc to even see the power up sequence.
Presumption is that you may have a protector device to the lamp or ballast
circuit that has failed, if so then you probably need to replace both
items to make the unit function. Cost of parts may precede your decision
to purchase the lamp let alone the ballast.
Mark said:
Art wrote:

I'm assuming, this is the order I should investigate in?

I don't even get a fan when I try powering it up. I'm not
sure how the lamp circuitry interacts with that.
Lamp, Lamp Driver [ballast], protect circutiry or devices.
I just bought this LCD projector for a song as it doesn't power up.
Does anyone have a source for a service manual or schematic?

It's a SV10 Hopper. Circa 1999-2000. The philips service organisation
is pretty useless. I'm hoping there's third party support for this.

I've done rudimentary checking on it to this point, There's a line
filter
on the input 120V that appears to pass voltage correctly, then a 120V
to 395V module, that appears to only be passing 365V, which seems like
a
pretty large variation. I'm suspecting bad/dry caps somewhere, but a
pretty close inspection of the power supply boards doesn't show any
that
are bulging or leaking. Any ideas? Thanks.
 
W

WDino

Jan 1, 1970
0
Have you tried eBay for Service Manual?
Some people have been selling CDs of various makes.
 
M

Mark

Jan 1, 1970
0
WDino said:
Have you tried eBay for Service Manual?
Some people have been selling CDs of various makes.

Hadn't tried that. When I did an ebay search for Philips projectors, I
didn't find much at all.

Mark
 
A

Andrew Kibler

Jan 1, 1970
0
I have a philips made projector that had a similar problem. It was the
bulb. What happened was it tried to fire (you could hear the HV arcing
a few times) then it would quit. It sends a 2kV starting arc out to
start the lamp, then 380 or so to run it. Check for the start arc. In
mine there are three control wires going to the lamp ballast. One is on
control, one is ground and one is start OK that is a signal from the
ballast to the projector that the lamp started OK. In order to test the
machine, I removed the ballast and bulb and replaced it with a simple
overhead projector bulb temporarily and sent the lamp OK signal at the
appropriate time. This allowed the projector to fire up and I could see
the picture, although it wasn't as bright as with an HID bulb. Good
luck!


Starting to sound like if it's not caps or something simple like that,
it's a good parts machine for my other one? Bulbs are about $310.
I don't think I'll even try buying a system board the size of the power
supply. If I could even get it, it'd be far more than it's worth.
It's a good basic machine, but not high end by any means.

Can you point me in the direction of a good dissertation on metal halide
ballast circuits? I don't have a single schematic on something like this.

Thanks,
Mark
If the lamp or ballast circuit is not functional it will shutdown, not
allowing the cooling fans,etc to even see the power up sequence.
Presumption is that you may have a protector device to the lamp or ballast
circuit that has failed, if so then you probably need to replace both
items to make the unit function. Cost of parts may precede your decision
to purchase the lamp let alone the ballast.
Mark said:
Art wrote:

I'm assuming, this is the order I should investigate in?

I don't even get a fan when I try powering it up. I'm not
sure how the lamp circuitry interacts with that.

Lamp, Lamp Driver [ballast], protect circutiry or devices.
I just bought this LCD projector for a song as it doesn't power up.
Does anyone have a source for a service manual or schematic?

It's a SV10 Hopper. Circa 1999-2000. The philips service organisation
is pretty useless. I'm hoping there's third party support for this.

I've done rudimentary checking on it to this point, There's a line
filter
on the input 120V that appears to pass voltage correctly, then a 120V
to 395V module, that appears to only be passing 365V, which seems like
a
pretty large variation. I'm suspecting bad/dry caps somewhere, but a
pretty close inspection of the power supply boards doesn't show any
that
are bulging or leaking. Any ideas? Thanks.
 
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