52" Magnavox projection TV No Power

V

Vetsen

Guest
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120 AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen
 
Common problem has been the LOPT and associated circuitry
"Vetsen" <spam@thecastanettes.com> wrote in message
news:697c81c0.0404281025.468f20ef@posting.google.com...
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120 AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen
Click to expand...
 
"Art" <stubby@comcast.net> wrote in message
news:eoGdnaYt8pT2YhLdRVn-hg@comcast.com...
Common problem has been the LOPT and associated circuitry
"Vetsen" <spam@thecastanettes.com> wrote in message
news:697c81c0.0404281025.468f20ef@posting.google.com...
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120 AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen


Whats a LOPT ? Line OutPut Transformer ???
Click to expand...
 
Best call a Technician Vetsen...

kip

--
"Watch the return E-Mail addy its false"
"Tim Kettring" <tim6kettring@e-garfield.com> wrote in message
news:c6ov8n$eggcr$1@ID-212626.news.uni-berlin.de...
"Art" <stubby@comcast.net> wrote in message
news:eoGdnaYt8pT2YhLdRVn-hg@comcast.com...
Common problem has been the LOPT and associated circuitry
"Vetsen" <spam@thecastanettes.com> wrote in message
news:697c81c0.0404281025.468f20ef@posting.google.com...
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120 AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen


Whats a LOPT ? Line OutPut Transformer ???
Click to expand...
 
POPT?

Sorry, I guess I should have said that I am pretty new to TV repair.
I am more familiar with audio stuff.

Could you elaborate a bit for me?

BTW that was supposed to be 120V AC in my first post
Vetsen


"Art" <stubby@comcast.net> wrote in message news:<eoGdnaYt8pT2YhLdRVn-hg@comcast.com>...
Common problem has been the LOPT and associated circuitry
"Vetsen" <spam@thecastanettes.com> wrote in message
news:697c81c0.0404281025.468f20ef@posting.google.com...
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120 AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen
Click to expand...
 
sorry about my typo. I'll get the hang of this keyboard sometime...

Vetsen
 
I AM a techinician ( 30 years ) with 5 CETs and FCC liscense and permit . I
have not fixed TVs in 20 years though .

Do you know what Transit Time Dispersion Factor refers to ? I do .

"john" <va3mmTAKEOUTTHIS@niagara.com> wrote in message
news:newscache$evfwwh$zqd$1@newsfeed.niagara.com...
Best call a Technician Vetsen...

kip

--
"Watch the return E-Mail addy its false"
"Tim Kettring" <tim6kettring@e-garfield.com> wrote in message
news:c6ov8n$eggcr$1@ID-212626.news.uni-berlin.de...
"Art" <stubby@comcast.net> wrote in message
news:eoGdnaYt8pT2YhLdRVn-hg@comcast.com...
Common problem has been the LOPT and associated circuitry
"Vetsen" <spam@thecastanettes.com> wrote in message
news:697c81c0.0404281025.468f20ef@posting.google.com...
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120
AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen


Whats a LOPT ? Line OutPut Transformer ???
Click to expand...
 
Sorry Mate: These flippin things have changed just a bit in the last two
decades since you had your pinkies into them. Maybe you are in a bit over
your head, IMHO.<
My First Class FCC License does help me be impressive when sparing amongst
friends and other intelligent members of the community. But it does not
carry dupa when checking out these teles with the unique problems and
consumer induces FUBARS!
AGAIN, IMHO have the bloody thing checked out by someone who knows them,
may save you a lot of aggravation and maybe a few green stamps to boot, Eh.
???
"Vetsen" <spam@thecastanettes.com> wrote in message
Click to expand...
news:697c81c0.0404281326.35dbe344@posting.google.com...
sorry about my typo. I'll get the hang of this keyboard sometime...

Vetsen
Click to expand...
 
Yea Right...
So what has that got to do with Vetsen,s post

kip

Ps: "Is it related to Dimension Drive Engines" ?
If so yes I know I do..

--
"Watch the return E-Mail addy its false"
"Tim Kettring" <tim6kettring@e-garfield.com> wrote in message
news:c6pmo7$eq8oq$1@ID-212626.news.uni-berlin.de...
I AM a techinician ( 30 years ) with 5 CETs and FCC liscense and permit .
I
have not fixed TVs in 20 years though .

Do you know what Transit Time Dispersion Factor refers to ? I do .

"john" <va3mmTAKEOUTTHIS@niagara.com> wrote in message
news:newscache$evfwwh$zqd$1@newsfeed.niagara.com...
Best call a Technician Vetsen...

kip

--
"Watch the return E-Mail addy its false"
"Tim Kettring" <tim6kettring@e-garfield.com> wrote in message
news:c6ov8n$eggcr$1@ID-212626.news.uni-berlin.de...
"Art" <stubby@comcast.net> wrote in message
news:eoGdnaYt8pT2YhLdRVn-hg@comcast.com...
Common problem has been the LOPT and associated circuitry
"Vetsen" <spam@thecastanettes.com> wrote in message
news:697c81c0.0404281025.468f20ef@posting.google.com...
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120
AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen


Whats a LOPT ? Line OutPut Transformer ???
Click to expand...
 
So I had a question about a rear projection TV. It doesn't work. I
think it's the power supply. Is this the propper place to ask how to
fix it? Seems like there are other forces at play.

Vetsen
 
Yes this is the place ,Vetsen first what
trouble shooting have you done so far.
What voltages do you have tell us more !

kip

--
"Watch the return E-Mail addy its false"
"Vetsen" <spam@thecastanettes.com> wrote in message
news:697c81c0.0404290910.27d82861@posting.google.com...
So I had a question about a rear projection TV. It doesn't work. I
think it's the power supply. Is this the propper place to ask how to
fix it? Seems like there are other forces at play.

Vetsen
Click to expand...
 
There is a little board called the "AC Panel" or something like that.
where the mains power comes in, and goes to all the other modules. I
have checked the leads to every module that I can get to and they all
have 120V AC. That's all that I could figure out without a schematic.
My guess is the power supply. I have also heard of the RAM battery
being bad, but doubt that it's going to be that easy. It wasn't
obvious how to replace the battery so I haven't tried that yet. I'll
do a little more probing and post soon.

It looks to be a switching type PSU, which I don't know so much about.
I build PSUs all the time using voltage reg. filter caps and
transformers. I did see what looked to be bridge rectifier in the
form of 4 diodes, but maybe it was a voltage doubler or similar.

Thanks,

Vetsen
 
any ideas. I'm about to pull out the audio amp and speakers and junk
this heap. any one have any ideas before I do it?

Vetsen
 
Uh, a little more info would help with our advice; chassis #, model #, that
sort of thing...
 
MODEL # RK8568 AK02

Unit won't power up. Fuses are good. The modules are getting 120 AV.
Is the Power Supply bad? Easy fix? Power supply # CTN 6220. I
don't have the chassis #.

Vetsen
Click to expand...
 
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