The way to unlock a Mitsubishi TV:
Turn the TV on
Using the remote control press the "9" and the "Q.V." buttons and hold them down for about 10 seconds
The TV should unlock
Hi james
You don`t need to go into the service menu to fix your problem.
On your model the problem is caused by the picture in picture (P.I.P) module.
Since that module is getting to be rare and expensive, most people now just bypass it, here`s the procedure.
First you`ll need two capacitors;
One .01 mfds(microfarads) any low volts non polarized
One 4.7mfds/16 or 25 volts electrolytic
take off the back of your tv and you will see a board with a metal cage and a ground wire soldered on it.
Cut off the ground wire and pull up that circuit board (there are plastic locks at the bottom)you won`t need it anymore.
Now there are a couple of ways to do this;
You can plug the capacitors directly into the socket where that circuit board was or you can solder them underneath.
The pin numbers are written underneath on the main p,c board.
Using the .01 mfd capacitor connect pin 7 to 9
Using the 4.7 mfds connect the + lead to the pin 5 and - lead to pin 11
If you plug them just make sure the leads don`t touch each other since they cross.
And that should fix your roll and even improve your video.
Hope this help and let me know how it goes
But if you still want the service menu here it is;
For Factory Menu, press MENU 1 3 7 0 Service Adjustment Mode, press MENU 2 3 5 7 Use the VIDEO or VIDEO buttons to enter two different groups of adjustments Use the VIDEO / VIDEO buttons to toggle thru the adjustments Use the + and - keys to adjust When finished with adjustments, press ENTER to save Press MENU twice to exit service mode NOTE: If the above MENU number combinations won't work to enter service mode, try one of the following:
MENU 1 2 5 7 MENU 1 2 5 9 MENU 2 3 5 6 MENU 2 3 5 8 MENU 8 2 5 7
Could be a poorly soldered connection on the relay unit which will need to be resoldered, the relay driver transistor could be faulty , and check nearby capacitors to make sure they havnt gone faulty, you can usually do this by replacing them all.
The text mode in the closed caption is turned on.Turn off the closed caption. I don't have the schematic in front of me, so, I will wing it. There may be a button on the remote that says CC, if so then use that button to turn it off, if not then go to the customer menu and you may have to search a bit. Either way it's an easy fix and you can do it yourself. If you can't find it, then, reply and I will give better instructions when I get into my shop next week.
You will need an original Mitsubishi remote. The original remotes usually have 3 large oval buttons labeled Audio (up and down), Adjust (up and down) and Video (up and down). Pressing the Audio button will bring up the usual Bass, Treble, Balance... and Speakers Off. When you see those words press the Adjust button and the speakers will switch to On. Some sets have the Audio, Adjust and Video buttons behind a little door on the front of the set, so check there first and if not, get an original remote.
If a black square appears on the screen and you can see the picture around the edges, it means that the closed captions are on and set to "TEXT". Go into the TV's menu, navigate to the closed captions page and set the captions to OFF.
The lamp is not enabled possibly due to the colour wheel motor not turning.
Any broken glass jamming it?
Or the lamp ballast has failed due to an old/worn lamp.
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.
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.
You can purchase a replacement power cord for your Mitsubishi model #LT-55164 from TVserviceParts.com. The part number for the power cord is 246C638010 and it costs $18.40.
Hoping you did not have electric overload that damaged the power supply, try unplugging the set and push the button On until no lights indicate anything. Then wait about an hour so the capacitors would empty themselves further. Next plug it back in and see if this worked. It is never wrong to push the edges a little in finding if the cables that go around the screen have a problem at that point. When one opens the TV (off power and unplugged) these flat cables should be checked for corrosion and right position in connectors. Corrosion is caused by little moist only, combined with the electricity. Then see if capacitors from the power supply, or any at all, have expanded tops. Those are the larger and smaller towers with metal on top that is divided in three parts. New ones alike can then be ordered but replacing requires basic skills. Further examples can be found on YouTube. Capacitors are common to fail early. Those larger ones have dangerous high voltage and can hold their charge for long span of time. it is not uncommon for devices like this to fail after being off.
If your Mitsubishi TV LT-55154 has no picture but has sound and the green light is solid, there are a few potential causes for this issue:
Faulty backlight: The backlight in your TV is responsible for illuminating the screen. If the backlight is not functioning properly, it can result in a black screen while still producing sound. You can try shining a flashlight on the screen at different angles to check if you can see any faint images. If you can, it indicates a backlight issue. In such cases, the backlight unit may need to be replaced. Contact a professional technician or the manufacturer's support for further assistance.
Loose or damaged cables: Check that all the cables connecting your TV to external devices (such as cable/satellite boxes, DVD players, or gaming consoles) are securely plugged in. Ensure that there are no loose connections or damaged cables, as this can lead to a loss of video signal.
Incorrect input/source selection: Make sure that the TV is set to the correct input or source that corresponds to the device you want to watch. Use the TV remote to cycle through the available input options and see if the picture appears on any of them.
Display settings: It's possible that the display settings on your TV have been inadvertently adjusted or misconfigured. Check the TV's menu options for any settings related to picture or display, such as brightness, contrast, or picture mode. Resetting these settings to their default values might help resolve the issue.
Hardware malfunction: In some cases, a hardware malfunction within the TV, such as a faulty video processing unit or mainboard, can cause a loss of picture. In such situations, it's recommended to contact a professional technician or the manufacturer's support for further troubleshooting and potential repairs.
Remember to exercise caution when working with electronics, and if you are unsure about any steps or lack the technical expertise, it's best to seek professional assistance to avoid causing further damage to your TV.
