Question about Insignia IS-LCDTV32 32 in. Television
My 37 inch flat screen has a constant buzzing sound and a purple bar that goes up and down the screen
SOURCE: buzzing emitted by vsx-409
Could be the result of having DTS compatible equipment connected through the analog inputs on the VSX-409D. Noise and distortion will result as essentially the DTS signal is being played back undecoded. If this is the case you'll have to connect your LD or CD player through the digital connections (coax or optical) and set 'Signal Select' (button on front) to 'Digital'.
Posted on Jan 07, 2008
SOURCE: Purple and green scrolling lines
This may be a mechanical or electronic problem that is dealing with the sync of the colour wheel. There is basicly no colour lock. This may be the replacement of the associated circuit board, or the motor assembly or the colour wheel.
The link below is describing about how DLP technology works. They are relating to a front projection type. With the rear screen type, the basic technology is very much the same for decoding the pictures from the TV signal.
Posted on May 06, 2008
It sounds like an Intergrated Circuit (IC) has fried.
Your best bet in this situation is to contact ur tv service operator and let them recommend an authorized service center in your area....
Posted on Jun 01, 2009
Make sure you have a ground prong on your power cord. Most input jacks nowadays are closed circuit. They have a switch built in that won't allow any sound without the cord plugged in. You may have a damaged jack that will give you a loud hiss, a loud hum or crackling depending on what volume your controls are set at.
Posted on Aug 28, 2009
Yes, he means 2200 microfarret (called uf from here on out). Another important concern when buying a replacement is the voltage. You need to get something that is at least 25v. I recommend a 35v or better. Another notable point is that this may not always fix the problem. As with mine, there was also a 1200uf (microfarret) 35v capacitor that was blown. You can tell this because they bulge at the top. I have both of these caps (2200uf 35v and 1200uf 35v) on order and they will be here tomorrow. If I do not post back here then they fixed the issue for me. I suspect that this will resolve the problem. Look for bulges on top of the caps. This is an indication that they are blown. Most all of you experiancing these symptoms will see the 2200uf cap bulging but you may also see others bulging too. If you do then you need to replace those too. No electrolitic capacitor should be bulging at the top so if its bulging its bad, and if its bad then your tv will definitely not work. Have fun.
Posted on Oct 13, 2009
Tips for a great answer:
Jan 27, 2011 | Flat Panel Televisions
Sep 07, 2010 | LG 37LC7D 37 in. LCD HDTV
Apr 13, 2009 | Polaroid FLM-3734B 37 in. LCD HDTV
Mar 24, 2009 | Vizio L32 32 in. LCD HDTV
Dec 23, 2008 | Samsung SP-S4243 Television
54 people viewed this question
Usually answered in minutes!