Question about RCA Televison & Video
I have an RCA 46 " projection TV, aprox. 10 or ll yrs. old. Model # P46720LV
Service # P46720LVLG1. It started making a popping or clicking sound and then the picture just went out. Pushing the power button now causes it to make a loud buzzing sound which stops when the power button is released. There is no picture at all. I know it is an old TV. Is it a goner or worth repairing? Any advice is greatly appreciated.
That would be the inverter board, supplies power to the bulb, you would need to replace this part, but don't touch the board without wearing rubber gloves, as it can store a lot of voltage when they fail . when you get the board out discharge the capacitors to make it safe. cross the live and negative on the capacitors.
Posted on Jul 08, 2017
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Posted on Jan 02, 2017
SOURCE: rca rear projection broke?
This may help with yours since it was built in 99
Product Safety Information Product Safety information is contained in the appropriate TCE Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury. First Edition ¾ First Printing Copyright 2000 ¾ Thomson Consumer Electronics, Inc. Printed in U.S.A. ¾ Trademark(s) ® Registered ¾ Marca(s) Registrada(s) Symptom: Shutdown during channel change, shutdown during autoprogram, dead set or unexplained random shutdown. Cause: Incorrect F2PIP Power on Reset (POR) timing Cure: Product Support · Mail Stop INH 900 P.O. Box 1976 · Indianapolis, IN 46206 -1976 TV 00-003 Television TTI TV 00-003 MODELS: CTC195/197, MM10x, CTC203 Chassis with F2PIP DATE: July 14, 2000 TOPIC: F2PIP The following modifications are required to change FPIP POR timing for added reliability. NOTE: All chassis manufactured after 950XXXXXX have the modification installed. Follow these steps in order. All CTC195/7 – All CTC203 1. Insert a 2.2K ohm 0805 size SMD resistor from pin 21 of U18100 to ground (192096). Note: This may require “piggybacking” the resistor on top of C18114. MM101 Chassis 1. Insert a 2.2K ohm 0805 size SMD resistor from pin 21 of U18100 to ground (192096). Note: This may require “piggybacking” the resistor on top of C18119. The next steps are dependent upon the chassis under repair. CTC195F, F2, F3 chassis 2. Replace R18111 with a 100K resistor (192084) 3. Replace C18118 with a 330nf cap (220132) 4. This concludes the modifications for these chassis. CTC195/7 (except CTC195F,F2,F3) and all CTC203 2. Replace R18116 with a 100K resistor (192084). Both are off pin 23 of U18100 3. Replace C18121 with a 330 nanofarad cap (220132) 4. This concludes modifications for these chassis. MM101 Chassis No further modifications are necessary.
Posted on Jun 02, 2009
SOURCE: lost picture
When was the last time u replaced the projection bulb,yes it could be that simple the projection bulb it dead.The bulb last only about 1 or 2 years,by using the tv on about 4 or 5 hours a day.
Posted on Jun 14, 2010
SOURCE: 46" projection tv ..colours were
Projection TV sets have two very common problems oulined below.
Problem #1: Convergence Chip Failure ( common problem )
Here are some of the most common symptoms and example photos of a convergence problem
Here is a quick test....
Using your original remote go-to the tv settings then goto the convergence section.
Try to adjust the red and then the blue convergence.
You should be able to move them up, down, left, and right.
If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.
Problem #2 CRT Fluid is Cloudy
Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.
Picture of a set that needs the fluid changed.
TV set after fluid change
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc
Posted on Dec 24, 2010
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