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Mitsubishi WS-73907 TV Questions & Answers
The picture wont come on, power is on but screen is black
this a lack of RASTER, TEST AND measure a) , fuse, c. breaker, transformer, filter, diode, rectifier, IC voltage regulator +horizonta output transistor, HV rectifier, and Flyback HV. God bless you
Screen wont come on
is lack of RASTER , test the complete POWER supply: fuse, c. breaker, filter, transformer, IC regulator voltage, horizontal transistor, HV rectifier, + FLYBACK .God bless you
The tv will not stay
If it goes out after a few minutes, it could be bad solder connections on the convergence IC's or elsewhere. If it shuts down right away, it could be a short in one of the picture tubes which would not be worth replacing. It could also be a shorted high voltage transformer which would also make it beyond economical repair. Unless the set had an exceptionally good picture, I would be inclined to replace it. If you have noticed any color "smearing" across parts of the picture -- trash it.
Double vision pops in and out
projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.
Common Problem #1) Convergence has gone out
Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.
Common Symptoms include....
- Screen looks 3D
- Colors don't line up
- One or more colors can't be adjusted when using the convergence menu.
- Screen is bowed or warped.
- TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.
Common 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
SOLUTION
You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
The picture is sort of
You have bad grounds on the convergence ICs. Smacking your TV with a shoe will only work so long. You will definitely need to resolder the signal board convergence IC pins, and save your shoe for other important things. You will need help with this, as this TV is too complicated to repair for the novice. Thanks for asking and show a few hands of support.
Convergence is way off, Rt & Lf side of screen
Convergence IC's inside of your TV have to be replaced. Also some low value resistors around IC's could be burned as well.
Then convergence have to be realigned. This job require above-average soldering skills and cost around $300 if you hire TV repairman to do that.
Regards.
Russ.
Help, Help, Help! Mitsubishi 73" red convergence fiasco
Thats the time you need to replaced the convergence IC.
Just click below for convergence repair kit;
http://servicemanuals.vstore.ca/Double images and colors are blurry and fuzzy images .Blue,red and yellow wave coming up from the bottom of the screen on the lower left and cannot be adjusted this is the symptom for busted convergence IC,you must replaced this IC in order that will works better again.STK 392-xxx ICs and it's associated resistor,this resistor automatically change value,can caused truoble even though you change the ICs.If you bring this to a service center they cost you $600 to $700,but if you buy the repair kit you can save more,don't wory it is very easy because there is intallation guide including in the repair kit. Feel free to ask whatever the result... click the link for sample picture guide step by step installation;
Hope this may help;
Regards,
VOTIT
Mitshubishi WS-73907 won't stay on
I suspect you may have a short in the horizontal deflection circuits or High Voltage transformer. If the set had a "great" picture, it may be worth fixing providing you aren't planning to upgrade to a HDTV anytime soon, otherwise I would use this excuse to start looking for a new set. Worst case I can envision with this set would be one of the picture tubes having a Short, keeping the set from turning on. That would make it unreparable.
Three colors are "bowing"...
I would take it to a TV repair place, they will charge around $50 and let you know what the problem is with it. this is your cheapest way out, it you want to get it. If you chose to take it please give me a fixya rateing. Thanks, Farren
Mitsubishi VCR HS-U580 guide rollers not moving forward all the way. Cassette would not load. Also noticed drum not spinning when powered on
Your Mitsubishi VCR HS-U580 looks to have a problem with the information rollers and drum. Here are some things to check:
Look for something blocking the VCR or cassette compartment that would possibly be stopping the guide rollers.
Check the belt that drives the VCR mechanism. If it is loose or broken, you may also need to substitute it.
Clean the video heads using a head-cleaning cassette to make certain they're not dirty.
See if the drum motor is working. If it is not spinning, there may be an issue with the motor.
If the trouble persists, it's an exact idea to get assistance from a professional technician or contact Mitsubishi's purchaser support for advice.
Be cautious when dealing with electronic devices, and if you are not certain what to do, it's great to get assistance from an expert.
Where could I download a copy of a service manual for mitsubishi hs-u580 vcr?
i think finding a downloadable service manual for your Mitsubishi HS-U580 VCR might take some searching, but here are a few options:
Check the official Mitsubishi website's support section. They might offer downloadable manuals for older models.Many online appliance parts stores like RepairClinic or AppliancePartsPros stock service manuals for various brands and models. Search for your specific VCR model to see if they have it available.Websites like ManualsLib or iFixit sometimes host user-uploaded service manuals. While the availability and quality can vary, it's worth checking. If online options fail, consider purchasing a physical copy of the service manual from online marketplaces like eBay or Amazon.
Remember, some websites might charge a fee for downloading manuals. Always be cautious of suspicious websites and download from reputable sources.
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