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High voltage How to discharge the high voltage to remove crts for coolant change

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Be careful doing that: answer: connect a test lead with a jumper wire to a long screwdriver and insert under the anode cup (rubber etc) and touch the jumper to ground on the metal frame inside the set.

Posted on Dec 22, 2012

Testimonial: "Thanks TV repaired and works great."

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SOURCE: I have an RCA P61926 62

Just unhook the leads and away you go..........................

Posted on Jul 12, 2009

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SOURCE: Remove wire

If you pull the speaker grille and unscrew the service door behind it, you will find a sticker on the surrounding frame of where the hv splitter is(the one with 4 red thick wires), I think you are supposed to turn the wire you want out 5 times and pull, but I am not sure so look for that important note.

Posted on Jan 28, 2010

Testimonial: "it worked, I turned several times and then pulled the wire and finally went out."

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Change fuse


You will have to remove the outer casing. DISCHARGE high voltage components first with no power applied prior to touching anything in the unit. Failure to discharge High Voltage Components can result in death

Aug 13, 2012 | LG MV-1444Y Microwave Oven

1 Answer

Picture faded model number is fp4620w103


This sounds like the coolant fluid needs to be changed - the coolant turns milky after awhile and you'll get a dull image.
Google TV repair world . com and look for philips/magnavox coolant replacement:
PHILLIPS CRT Coolant Replacement Kit This is the complete coolant kit for Phillips CRT rear projection televisions. Kit contains 48oz of top quality High purity optical grade coolant with complete detailed instructions produced in clear easy to understand terms with detailed photos and illustrations that takes you through the process step by step safely dischargeing the CRTs and eliminating the need for complete realigning proceedures.Restores the vibrant colors and focus issues commonly associated with coolant that needs replacement

Oct 18, 2009 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

Change CRT coolant in AKAI Pt5598HD


The CRTs in modern TVs do not hold a charge because the HV circuit shunts it to ground whenever you power down the TV. You can clean the lens of the CRTs but you can't change the coolant or should you even try. You'll notice that its sealed from the factory. If you suspect a problem with the coolant or that it has dried up or leaked out, you must replace that CRT.

michtech

Feb 20, 2009 | Akai PT5598HD 55" Rear Projection...

2 Answers

Kenwood CJ/AL28 microwave does not heat the food anymore...any reason why?


Check the high voltage fuse between the transformer and the capacitor, had the same problem with mineand this fixed it. Not an ordinary fuse though (5Kv 0.8a), cost me about a fiver.

Oct 16, 2008 | Microwave Ovens

1 Answer

No Green CRT projection


check the high voltage supply. each gun have a single input. be very careful, high voltage (1000v).
you are looking to buy a high voltage transformer. it is not cheap, and it is not easy to find.

Oct 14, 2008 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

Need to replace the two convergence IC's in my 65" mitsubishi DLP. Other than unplugging it, any other safety measures I need to take such as discharging the CRT's, etc.?


As long as you don't touch anything like the crts, the flyback transformer etc you are fine to unsolder the ic's and replace them. No high voltage current is in that area. Just be smart and take your time and always watch where you are putting your hands and your tools. Also, do not wear rings, or watches while working in the tv. IC's are a very easy removal and if you simply stay away from the high voltage components you'll be fine.

Jul 07, 2008 | Televison & Video

1 Answer

How to get to the crt's to clean?


Hello fixitmama33,
Be very careful these CRTs contain a hazardous coolant material in the cooling jacket and should only be handled by a professional TV repair person. First, if you are intent on doing this. I would suggest you get a schematic and study the exploded view of the TV and then follow the instructions on how to get to the CRTs properly.  I say this because there are a few things you have to do before removing the CRTs first you have to discharge the stored voltage in the CRTs (around 2Kv-15Kv) "Yes I have seen a CRT store up to 15K volts", This should only be attempted by someone who knows what to expect. 
I hope this helps
Thank you,
Shuttle83

Apr 29, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Hoyachi Ultravision Rear Projection TV Circa appx 1994


It looks like the high voltage that goes to the CRTs is shorting to ground, probably due to a coolant leak on one of them.
I would suggest to try to locate where the arcing is taking place and disconnect the wire that feeds the high voltage to that CRT and the crackling sound will stop and the TV will power up but without one color.
Just be very careful when working around the high voltage area. I hope you take all the necessary step to ensure your safety.
Let me know if you need further assistance after locating the defective CRT.

Apr 16, 2008 | Hitachi 43UWX10B 43" Rear Projection...

2 Answers

Powers on, audio works, no video at all


First, need to narrow down the problem. Did you perhaps change the input source? To this point, change the input source, there should be text on screen that indicates what source is selected.....do you see this? Change the volume....do you see the volume level bar on the screen?

May 12, 2007 | Toshiba 61H70 61" Rear Projection...

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