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This table is the information used by MOST diode manufacturers that use color banding on diodes. Most manufacturers stamp the ID right on the diode but some do use color banding as the method of identification. For purposes of alignment, the side with any color band closest to either side of the diode is the equivalent of the left side of this table. The three examples in the table when associated with the values in the lower table, are identified as 1N64E for the top diode, 1N452G for the middle diode and 1N4762 for the bottom diode.
See the color coding
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Power supply circuit diagram using STRF6656 is given. There are many TVs using this circuit in the SMPS. You can get details there. Type in the STR number; in the search box at the top right of the display window; to get gathered related posts.
just read the model and then google it, beside, if you short them, you need to replace them with same value, and this will be determined by the circuit, if you did not change the circuit - just buy two new diodes and install them, do not bother with voltages as they have some tolerance and type will determine it.
The circuit board may have been jolted by a power surge and a diode is stuck in the on position. The pathway is only in one direction and thus it can't be reversed. Replacement may be the ony solution.
Examine the screen with set on and color set to zero--stand back and look= is screen pink to red color?
If so it may be a common issue on this Hitachi.
Usually it is an adjustment inside the set of the red screen control needing to be turned just slightly down---these are known for the red control "drifting" just slightly from time to time--answer is based on model number indicated here.
This is a known issue which requires the replacement of up to 3 chips and the addition of a modification ( diode) The IC's are AN5268K The modification requires the installation of a diode 1N4148 connected between diode D6XAL and Diode The 1N4148 anode to D6XAL anode. The cathode of 1N4148 should be connected to the cathode of D6F04
You should also re-solder any bad connections on the board. If you are at all unfamiliar with replacement of IC's or hesitant you should have the work done by a qualified technician
It sounds like a faulty voltage regulator or diode on the power supply of the stereo. If you can check these things yourself also check for dry joints before checking diodes and regulator/s. If not trust a competant techmnician. Good luck.
I was not able to find any service or schematic for this model. The colors means that the value is 22.6 volts zener diode with the other blue band indicating where the cathode is.
Could you tell me where or what other components this zener diode is connected to?
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