RCA HD50LPW175 50 in. HDTV Television
Problem for RCA HD50LPW175 50 in. HDTV Television

Color Wheel -> Ballast strike?




By Ender2 on Jul 18, 2008

" "
First of all, I should mention that this is my first attempted DLP repair.

I have looked over the Service Manual and have made some very solid progress (I feel). I'll let you know what I have done so far and what I'm stumped on.

From "ATC336_Manual_lite.pdf"(which I got from another guru here (thanks))

Flow Chart "No Video - A"

Applied AC power, achieved normal boot up sequence, Began start up. Did instrument start normally and display video? :P Obviously not, onward to "No Video - B"

Flow Chart "No Video - B"

Did Color Wheel Spin? No, I have removed the lamp assembly and made sure to close the "Lamp housing safety circuit" and observed up close that the Color Wheel is NOT spinning.

Possible Light Engine Reset Failure ->
Remove AC power CHECK ->
Disconnect HDMI Cable to Light Engine CHECK ->
Apply AC power and wait for boot up signal to complete CHECK ->
Connect to any monitor capapble of Composite VIdeo Dislpay CHECK ->
Visible Video on Monitor? YES (I see a black screen with a few fuzzy white lines)
DM Module Ok
Go to Light Engine Troubleshooting chart
^
PROBLEM #1 (this is the same step I would have went to if they Color wheel DID spin, which leads me to believe that The said above steps should have "Fixed" the color wheel not spinning problem

Light Engine Troubleshooting Chart

Successfull Booth Sequence (5 blinds, Power LED stays on)
Color wheel Spin NO Remove AC and check Color wheel connectors and Color Wheel (I cannot figure out how to actually GET to the Color wheel)

Noting Problem #1, if the said steps had supposed "Overlooked" the color wheel not spinning... next box for Light Engine Trouble Trouble shooting?

Problem #2 Did Lamp Turn on? (Lamp Fan Start) Oddly, the FAN does start spinning but the Lamp does not start.
Continue to Light Engine TS - B

Remove Lamp CHECK ->
When boot up sequence is complete; turn on.

When the lamp strike occurs do you hear a tick? No, the ballast does not tick as it attempts to strike lamp arc.

So I guess the primary question here is Does the Color Wheel have to turn in order for the ballast to strike the lamp?

If so, does this mean the wheel needs to be replaced; if so; anyone have a diagram of how I un-house it?

If the ballast IS the problem; would a fixed one solve my problem and also make the Color Wheel turn again?

If I need any manuals with this response; my e-mail is Irsikd@aol.com

Thanks tons in advance!!!






Popular Solutions for RCA HD50LPW175 50 in. HDTV


Questions and Unsolved Problems for RCA HD50LPW175 50 in. HDTV


Do you recommend RCA HD50LPW175 50 in. HDTV Television?
Answer

Answer
My thomson 27lcdb03b now seems to need to 'warm-up'. For instance when switching on for first time... (More)

Answer
I have RCA scenium hd50lpw164 I turn it on and it works for a few mins then the sound stays but the... (More)

Answer
powers up evrything works for about 30-60 seconds then no screen. Blue light on the power button... (More)

Answer
I have RCA scenium hd50lpw164 I turn it on and it works for a few mins then the sound stays but the... (More)

Answer
there is no volume when watching tv but if dvd hooked up the volume works


Didn't find what you were looking for?

Describe your problem:

Select a Category:







Ask our Experts

 

Solve Your Problem Now!
Chat Live with an Expert
Chat Now
Top Projection... Experts



Top TV Repairmen
in , CA
(316) 283-8873

(316) 838-0811
Authorized Warranty On Rca,Integrity In Sales...


       
Solve Your Problem Now!
Chat Live with an Expert
Chat Now

Insert Link
Insert Image
Insert You-Tube clip
Insert List
Insert List
Spell Check

What is this?



Select