the lens should have a cover over it, water is in between it and the lens, if you clean it be sure to go with the circle so you dont scratch the lens, is like a record. thats if youve fixed the tv ofc
well if you cant save the tv keep the fresnel lens and take off the layer of tint that should be taped onto it, they make good solar cookers, check out some of the vids on youtube, i found one yesterday in the trash
i have a sony 48" projection tv in my room i just got and the picture looks good like the blue and the green are inline but the red is off some.. on the left of the screen theres a red shaddow below everything and on the right of the screen the red curves down like to the corner of the screen, i tried adjusting the lences and everyone says to get new convergences but do you think that is the problem? only the red is messed up is there an easier fix for my problem?
i have a sony 48" projection tv in my room i just got and the picture looks good like the blue and the green are inline but the red is off some.. on the left of the screen theres a red shaddow below everything and on the right of the screen the red curves down like to the corner of the screen, i tried adjusting the lences and everyone says to get new convergences but do you think that is the problem? only the red is messed up is there an easier fix for my problem?
I have a Toshiba RPTV 40PW8DB and removed the back cover from it and the dust in there is unbelievable caked on. I want to clean all the dust from the circuits. SAFELY! What should i avoid and not touch as i dont fancy touching something and resulting in a shock!
BTW...What's them 4 black plugs with red wires attached to them @ 1:20.
@underpantswedgy if its actually caked on to the point of needing to scrape it off I wouldn't touch it unless its causing a problem (cleaning the heat-sinks wouldn't hurt)
avoid touching anything with a thick red lead on it too, residual charge from the CRT's hurts!
vacuuming and brushing may generate static charge and fry things so just use a air duster can from a electronics store.
the black thing splits the 75kV high voltage charge for CRT's, don't touch it if the set is on on.
@zackthegoth not too sure, it would be in the Milli amp or even micro amp range, good for basic experiments but its not kick ass power (75kv @ 1A would be brutal!)
@Aussie50 Where do you get that figure from? I have 2 CRT projectors here, and neither of them are nearly that high. 30-40 kV would be a closer bet unless the service manual says otherwise...
Where you see at about 1:30 those 2 STK chips, that is what will more than likely have failed if youve lost control of the convergence.
What is the model number of the tubes and what condition are they in?
@redSKORPION50 a few people suggested these run up to 75Kv but I never bothered checking for sure. it does look like a standard TV flyback so 30Kv is more reasonable.
it was the STK's and the resistors that feed them (shorted resistors overloaded and killed them) the set was scrapped ages ago and CRT's got nuked in the microwave for fun :D
I've had 3 sets like this so far and all were scrapped since I already have a 42" Plasma and a 38" LCD to use, and 2 more 42" Plasmas to fix.
on this tv. i just got one that have all the fancy bells and whistles, speakers surround sound. and all. but when powered up it powers down after about 5 seconds any idea's on what that could be?
if you havent used the service menu in full and 1080 on this product , you haven't even begun to fix the problems . We have seen dozens of these where high voltage has sawed off the neck of the tube.....good luck. The arrogance and ignorance never fails to amuse me.
Is there any chance i could get a close up pictures of the CRT boards i have the same Tv aim trying to put it back together after someone messed it up thanks
Check solder connections on the STK amplifier packs.
These are convergences amplifiers controlled by the D/A outputs of the convergence processor. Very common that the connections fail at the PC board under the heatsink and you lose alignment of the CRTs!
Usually have an hourglass shape to 2 of the three CRTs. One CRT is fixed, but other two are adjustable and use the STK amp packs.
Happened to my Mitsubishi and just needed resoldering.
Speakers sound surprisingly decent in these sets even though they are low cost drivers. In worst scenario, should be able to cut out the speakers with wooden cavities to make a decent set of shop speakers.
Aussie50 did you save any of the other parts that worked? id be in heavin with a busted TV like one of these so many goddies inside. id keep the audio amp if it worked, the speakers, the gun lenses and that large fresnel lens in the screen and anything else I can use. do you have a teardown vid of this TV? id like to know what parts you saved off this tv. Thanks and I subbed.
That sux about the audio amp integrated into the mainboard. I took apart my old CRT TV b/c it was dying and the remote sensor on it was messed and couldnt change channels and sometimes it would buzz and the screen would be distorted. but I parted it and kept the mainboard and a few other parts. and the audio amp was integrated into the mainboard on my TV. I bought a flat screen TV to replace that old one. 19 inch Sansui HDTV.
Well... at least I'm glad that these monsters are extinct. :D
yo6ial 1 month ago
Fresnel lens, pronounced freynel lens, a really nice thing to keep if you have to scrap it.
randommscience117 7 months ago
@randommscience117 thanks for the pronunciation info!, I have 2 of them now :D. 1 42" wide screen and a 54" square.
Aussie50 7 months ago
@Aussie50 Awesome!
randommscience117 7 months ago
AUSSIE50 i would of loved them bitts mate out of that tv lol. shame ya in australia and im in the uk lol
variacsrule 8 months ago
the lens should have a cover over it, water is in between it and the lens, if you clean it be sure to go with the circle so you dont scratch the lens, is like a record. thats if youve fixed the tv ofc
Skryde 10 months ago
well if you cant save the tv keep the fresnel lens and take off the layer of tint that should be taped onto it, they make good solar cookers, check out some of the vids on youtube, i found one yesterday in the trash
Skryde 10 months ago
This has been flagged as spam show
i have a sony 48" projection tv in my room i just got and the picture looks good like the blue and the green are inline but the red is off some.. on the left of the screen theres a red shaddow below everything and on the right of the screen the red curves down like to the corner of the screen, i tried adjusting the lences and everyone says to get new convergences but do you think that is the problem? only the red is messed up is there an easier fix for my problem?
countryboyG 1 year ago
This has been flagged as spam show
i have a sony 48" projection tv in my room i just got and the picture looks good like the blue and the green are inline but the red is off some.. on the left of the screen theres a red shaddow below everything and on the right of the screen the red curves down like to the corner of the screen, i tried adjusting the lences and everyone says to get new convergences but do you think that is the problem? only the red is messed up is there an easier fix for my problem?
countryboyG 1 year ago
I have a Toshiba RPTV 40PW8DB and removed the back cover from it and the dust in there is unbelievable caked on. I want to clean all the dust from the circuits. SAFELY! What should i avoid and not touch as i dont fancy touching something and resulting in a shock!
BTW...What's them 4 black plugs with red wires attached to them @ 1:20.
underpantswedgy 1 year ago
@underpantswedgy if its actually caked on to the point of needing to scrape it off I wouldn't touch it unless its causing a problem (cleaning the heat-sinks wouldn't hurt)
avoid touching anything with a thick red lead on it too, residual charge from the CRT's hurts!
vacuuming and brushing may generate static charge and fry things so just use a air duster can from a electronics store.
the black thing splits the 75kV high voltage charge for CRT's, don't touch it if the set is on on.
Aussie50 1 year ago
@Aussie50
so that flyback transformer (the black thing) puts out 75kv? how many amps if you know?
zackthegoth 9 months ago
@zackthegoth not too sure, it would be in the Milli amp or even micro amp range, good for basic experiments but its not kick ass power (75kv @ 1A would be brutal!)
Aussie50 9 months ago
@Aussie50 Where do you get that figure from? I have 2 CRT projectors here, and neither of them are nearly that high. 30-40 kV would be a closer bet unless the service manual says otherwise...
Where you see at about 1:30 those 2 STK chips, that is what will more than likely have failed if youve lost control of the convergence.
What is the model number of the tubes and what condition are they in?
redSKORPION50 8 months ago
@redSKORPION50 a few people suggested these run up to 75Kv but I never bothered checking for sure. it does look like a standard TV flyback so 30Kv is more reasonable.
it was the STK's and the resistors that feed them (shorted resistors overloaded and killed them) the set was scrapped ages ago and CRT's got nuked in the microwave for fun :D
I've had 3 sets like this so far and all were scrapped since I already have a 42" Plasma and a 38" LCD to use, and 2 more 42" Plasmas to fix.
Aussie50 8 months ago
on this tv. i just got one that have all the fancy bells and whistles, speakers surround sound. and all. but when powered up it powers down after about 5 seconds any idea's on what that could be?
niffer58 1 year ago
@niffer58 nah I've never gotten into proper RPTV repair.
my first guess is power supply failure tho, but there are a number of things that can force a shutdown.
Aussie50 1 year ago
What model is this tv?
Acanofalconpunch 1 year ago
@Acanofalconpunch can't remember, its long gone
Aussie50 1 year ago
ya i know what the inside looks like .ill bet you spent years of your life trying to align bad
stk packs and bad tubes ya thats water LOLO
mikewm9v 1 year ago
nah, allignment is automatic, its just burnt out resistors. maybe STK packs.
Aussie50 1 year ago
alignment is automatic? hahahahah
wait till you hit focus with bad packs
the only way to store it is with the right remote
if you havent used the service menu in full and 1080 on this product , you haven't even begun to fix the problems . We have seen dozens of these where high voltage has sawed off the neck of the tube.....good luck. The arrogance and ignorance never fails to amuse me.
mikewm9v 1 year ago
i can tell you like metallica lol u have the s m dvd and your playing metallica in the background nice tv thought im getting a mitsubishi ws 65515
joeldude76 2 years ago
If solder connections okay, then replacement set of the STK convergence modules are about $20.00.
gavincurtis 2 years ago
Is there any chance i could get a close up pictures of the CRT boards i have the same Tv aim trying to put it back together after someone messed it up thanks
leahamy1 2 years ago
Check solder connections on the STK amplifier packs.
These are convergences amplifiers controlled by the D/A outputs of the convergence processor. Very common that the connections fail at the PC board under the heatsink and you lose alignment of the CRTs!
Usually have an hourglass shape to 2 of the three CRTs. One CRT is fixed, but other two are adjustable and use the STK amp packs.
Happened to my Mitsubishi and just needed resoldering.
gavincurtis 2 years ago
Thanks for the info!
I've seen a bit of info on the STK's in Samsung units failing, I'll resolder it and go from there
unless I can't get the water out of the fresnel lens, in which case its scrap.
Aussie50 2 years ago
Speakers sound surprisingly decent in these sets even though they are low cost drivers. In worst scenario, should be able to cut out the speakers with wooden cavities to make a decent set of shop speakers.
gavincurtis 2 years ago
Have you seen those vids of people melting bottles etc with fresnal lens like this.?
flashdamingo 2 years ago
lol yep!, that's sorta why I kept it for parts :D
lots of fun :D
Aussie50 2 years ago
Aussie50 did you save any of the other parts that worked? id be in heavin with a busted TV like one of these so many goddies inside. id keep the audio amp if it worked, the speakers, the gun lenses and that large fresnel lens in the screen and anything else I can use. do you have a teardown vid of this TV? id like to know what parts you saved off this tv. Thanks and I subbed.
coondogtheman1234 2 years ago
I haven't scrapped it just yet, I just havn't had time to try and repair it.
Your right about hte cool parts though, if i can't fix it I will keep the guns and lenses!
I think the audio amp is integrated into the main PCB and may not be separable :(
Aussie50 2 years ago
@Aussie50
That sux about the audio amp integrated into the mainboard. I took apart my old CRT TV b/c it was dying and the remote sensor on it was messed and couldnt change channels and sometimes it would buzz and the screen would be distorted. but I parted it and kept the mainboard and a few other parts. and the audio amp was integrated into the mainboard on my TV. I bought a flat screen TV to replace that old one. 19 inch Sansui HDTV.
coondogtheman1234 2 years ago
Here some light..if it's Samsung, scrap it..!
leokimvideo 2 years ago
yep!, I had another tinker with it and its more trouble than its worth.
Aussie50 2 years ago
The Screen is a large fresnell lens, I think.
idahodad1 2 years ago
yep! it is!
Aussie50 2 years ago
There is 75kV on the anodes of those tubes...
douro20 2 years ago
keep as much parts as possible especially that bog EHT Transformer
HDXFH 2 years ago
the EHT is the same as a monitor EHT, but I'll keep the tubes and lens
Aussie50 2 years ago
hmmm idk tnt ? fire ? nuke ? lol
67tr876 2 years ago
I'm thinking bonfire :D
Aussie50 2 years ago
yup thats the safe one BE SAFE ! lol
67tr876 2 years ago
turn it on and set fire to it.lol
V8Jagnut 2 years ago
that would be fun :D
Aussie50 2 years ago
nab that fresnel lens!!!
pixuma 2 years ago
yeah I'm keeping that :D
Aussie50 2 years ago
might as well scrap it or try to fix it i seen a lot getting thrown out now days
30GB 2 years ago
yeah, I'l check hard rubbish for one tomorrow, get spare parts :D
Aussie50 2 years ago