A thoroughly broke friend of mine has an old TV with a shaking image. It’s a Mitsubishi, marked CS 2724 R
The picture jiggles vertically but doesn’t flip or roll. The PIP moves right along with the rest.
History in sequence: TV was normal; TV began to get creaks or loud crack on the audio just on occasion, ie once/hour or less; picture began to shake until TV warmed up; noises went away at some point; jiggle now occurs immediately on turning on the TV and keeps it up.
It also occurs during playing a video.
Is there one item that could be changed out to fix this? Where would you start?
IANATVR, but I’d be willing to bet the cost of fixing what’s wrong with the Mitsu would far outweight the cost of a new idiot box.
Several years ago, I had a VCR that one of my ex’s rugrats damaged by jamming a tape in backwards. (They may be naturally able to program 'em, but don’t trust a kid to know the physical side of inserting a tape into a VCR.) I promptly put on my hero suit and retired to the basement workbench, and sure enough, within a couple hours, I held in my hand the tiny broken pieces of a little black plastic … something. Thingamajig, whatchamacallit, doodad? I contacted the manufacturer (JVC), who promptly offered to sell me a factory manual for that model – for $50. I then contacted the local TV/VCR handy fixit guy, who offered to do his best, if I was willing to buy him a factory manual for that model – for $50. Finally, I went to the gee-whiz super-duper electronic magna-repair joint down by the mall, and they said, “Sure! We can fix it! But first, you have to front us the $50 for the factory manual for that model.”
I was kinda hoping someone would say, Oh it’ll be the second biggest capacitor in the TV, or Find a little board full of transistors between the power supply and the picture tube and pull it out and get a replacement.
It would beat buying a whole new TV.
PS, is your sig really a quote from the preliminary to the prelude to the introduction to the preface…
DO NOT open up a TV and try to fix it yourself unless you are professionally trained. The capacitors in a TV can hold enough charge to kill you or at the least hurt a lot even if the TV is unplugged.
In general TBone2 is correct. It is hardly ever cost effective to repair most consumer elecronics these days. If the TV is a high-end, expensive model it might be worth having a repair tech take a look.
You might take a peek at the Repair FAQ web site. But working on TVs is really dangerous. Likely causes are bad capacitors, poor solder joints, or loose circuit board on the CRT.
A safe outside thing to consider: interference. Is there a computer, speakers, etc. nearby?
MaryEFoo, try Circuit city in San Jose & get yourself a new tv. You can shop online too, free shipping, at circuitcity.com
I had something like that once caused from too much moisture causing the grounding post(?) to rust, it was a big wire on the top of the tube, on the outside & I just wriggled it. But that’s when I got stupid & tried to fix things myself, these days they are cheap enough to buy. Ask them if they can dispose of the old one for ya.
A better solution is to put the word out that your friend needs a tv. People usually have one or 2 in a closet somewhere. I have 2 extra tv’s right now, and I’m not a rich dude or anything.
From the symptom, it sounds like a problem with the degaussing circuit, particularly the fact that the problem used to fade as the set warmed up. Does the problem get better when the room and/or the set are really warm? My WAG is that the degauss thermistor is bad. I really don’t recommend trying to change it yourself, but it might be worth getting it checked at a shop. 27" Mitsubishis are fairly expensive sets. If my WAG is correct, I’d estimate a fair repair price at around $65-$70. It might be a little higher in San Jose, but if it’s over $90, I’d suspect them of trying to gouge.
labboy has a good point. A lot of people have spare sets (usually smaller ones, but functional). Also, some shops have relatively cheap reconditioned sets for sale.
friend of mine has an old TV with a shaking image. It’s a Mitsubishi, marked CS 2724 R