Re: Need some help with an Insignia LCD

Eh, it was almost free (wasted money on non-needed caps), so better than nothing. Plus there's always the good old heatgun reflow .

Re: Need some help with an Insignia LCD

The heatsink is actually still firmly attached, just mounted slightly crooked. Though it looks like it is off and resting on the metal cage in the pic. I ended up mounting an 80mm case fan on the back casing right above the heatsink, tapping power off one of the 12vdc lines coming off the power supply. I then used an adjustable voltage regulator set to roughly 8vdc to lower the fan speed to a level where it didn't make any noise....

Re: Need some help with an Insignia LCD

I'm starting to wonder if the issue isn't heat related. On a hunch I left the back cover off the tv and set up a fan pointed to blow across the back of the tv and it's been working for about 4 hours without issue. Oddly enough it looks like the cpu on the main board has a heat sink on it, but the chip and heat sink are enclosed in a metal box....

Hi, I was given a broken Insignia ns-l32q-10a, hoping it would be an easy fix.
The problem is quite erratic, but the main issue it the TV messes up after about 45 minutes to 2 hours. Sometimes it will do one of the following:

-Power indicator turns off (no led on at all) or red, no sound, but screen is still on playing video, and it won't respond to any button presses.
-Power indicator turns red, no sound, screen randomly turns on and off with scrambled video, again will not respond to button presses.
-Power indicator stays blue, but the tv says no signal, and...

Re: Denon PMA-500v issues...

Ok, I replaced all 4 output transistors (including the 2 left channel ones, just in case), the blown cap, and the fuses and it worked great for about a day and a half. I had the receiver hooked up to my computer after testing it out, but not playing anything, before giving it back, when it randomly made a loud horrible electrical arcing hiss noise from the right channel speaker and it smelled like a toasted resistor. I quickly turned it off and unplugged the power. Both brand new right channel transistors are shot, and a nearby resistor looks burnt,...

Re: Denon PMA-500v issues...

The receiver is actually my friends and he would occasionally turn it up too loud and it would make a horrible popping noise from the speakers(clipping?). As a precaution I am replacing both output transistors on both channels, the cap that smoked (It seems to work, but the top is bulged out), and the fuses (duh).

Re: Denon PMA-500v issues...

Quick update: Took both output transistors out for the right channel and both of them are shorted. Left channel ones check out. I also checked the resistor that smoked and it seems to be fine.

Hi, I'm having a problem with a vintage Denon receiver that up until a week ago worked wonderfully. The right channel randomly got severely distorted, while the left remained normal. Today I opened it up to see if I could see anything wrong, and I found 2 blown fuses that correlate to the right channel. As a test, I took the 2 functional fuses from the left channel (same specs) and put them in place of the blown ones. As soon as I hit the power button both fuses blew and a capacitor right next the the fuse on the right let out a little smoke. So now both channels sound horribly distorted. ...