REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Thursday, 11 April 2019

YAMAHA AV RECEIVER - RX-V573 - HTR-5065 – HOW TO ACCESS DIAGNOSTIC MODE – PROTECTION MODE AND CAUSES – FIRMWARE UPDATE PROCEDURE

Yamaha AV Receiver - RX-V573 - HTR-5065 – How to access diagnostic mode – Protection mode and causes – Firmware update procedure


Self-Diagnostic Function
While pressing the “TONE CONTROL” and “INFO” keys, press the (Power) key to turn on the power and keep pressing those 2 keys and  (Power) key for 3 seconds or longer. The self-diagnostic function mode is activated.
Canceling Self-Diagnostic Function
1. Before canceling self-diagnostic function, execute setting for “S3. FACTORY PRESET” menu. (Memory initialization inhibited or Memory initialized).
In order to keep the user memory preserved, be sure to select PRESET INHIBIT (Memory initialization inhibited)
2. Press the (Power) key to turn off the power
 
PROTECTION MODES AND CAUSES
When there is a history of protection function due to excess current.
Cause: An excessive current flowed through the power amplifier.
Supplementary information: As current of the power amplifier is detected, the abnormal channel can be identified by checking the current detect transistor.
Turning on the power without correcting the abnormality will cause the protection function to work immediately and the power supply will instantly be shut off.
When the protection function worked due to abnormal DC output
Cause: DC output of the power amplifier is abnormal.
Supplementary information: The protection function worked due to a DC voltage appearing at the speaker terminal. A cause could be a defect in the amplifier.
Turning on the power without correcting the abnormality will cause the protection function to work in 5 seconds and the power supply will be shut off
When the protection function worked due to abnormal voltage in the power supply section.
Cause: The voltage in the power supply section is abnormal.
Supplementary information: The protection function worked due to a defect or overload in the power supply.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 seconds and the power supply will be shut off.
When the protection function worked due to excessive heatsink temperature.

Cause: The temperature of the heatsink is excessive.
Supplementary information: The protection function worked due to the temperature limit being exceeded.
Causes could be poor ventilation or a defect related to the thermal sensor.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 seconds and the power supply will be shut off.
UPDATING FIRMWARE
Confirmation of firmware version and check
Before and after updating the firmware, check the firmware version and checksum by using the selfdiagnostic function menu.
Start up the self-diagnostic function and select “S4.
ROM VERSION/CHECKSUM” menu.
Using the sub-menu, have the firmware version and checksum displayed, and note them down.
When the firmware version is different from written one after updating, perform the updating procedure again from the beginning again.
Initializing the back-up IC
After updating the firmware, the back-up IC MUST be initialized by the following procedure to store the setting information (soundfield parameters, system memory and tuner presetting, etc.) properly
Start up the self-diagnostic function and select “S3. FACTORY PRESET” menu.
Select “PRESET RSRV”, press the (Power) key to turn off the power once and turn on the power again. Then the back-up IC is initialized.
Firmware Updating  procedure 
1. Insert the USB storage device to the USB jack.
2. While pressing the “INFO” key, connect the power cable to the AC outlet.
3. The USB UPDATE mode is activated and “USB Update” is displayed. Writing of the firmware starts automatically.
4. When writing of the firmware is completed, “UPDATE SUCCESS”, “PLEASE...” and “POWER OFF!” are displayed repeatedly.
5. Press the (Power) key to turn off the power.
6. Remove the USB storage device from the USB jack.
7. Start up the self-diagnostic function and check that the firmware version and checksum
Posted By: FRANK at 01:18
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