Philips HTS3555: Can anyone identify the component (diode?) that is located at position ZD908 on the power board? It's located near the center left section of the board. Mine's burnt and broken and I want to try to replace it.
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Most diodes have numbers and letters on them. If not visible, they might be on the bottom side where they cannot be seen without removing the component. There is a chance Toshiba used some sort of proprietary number on it. In that case, you'd have to guess at its function based on its location in the circuit. Electronic circuitry knowledge would be needed for that. Amazon currently sells the entire circuit board. So that's another option.
Have a look here. Hover your mouse over the area of the PCB to zoom in on the component you're trying to identify. I saw the C604 labeled as: "B. 102K 1KV" I couldn't see the other part you're look for though.
Check out this replacement PCB for $88. It isn't available for shipping until March though.
Its been a while since i worked on that power board. But I believe you are refering to the orange diode that runs into the single connector for the video board next to the power supply. I replaced mine with a 1n914 diode after replacing the 2200uf lytic cap and the tv fired right up.
I had the same problem, it is a Diode on the Power Supply Board. The Location number is D1054, you should change C1051 also. It maybe leaky. I used a 10v 1000uf capacitor instead of the 6.3v 1000uf it had. Make sure to be careful when changing these components, making sure the polarity is right. Good Luck!
I just fixed an HTS3555/37 with a no power problem. As one person mentioned, you can hear a ticking sound.
The problem is a diode/rectifier on the power supply board. There was no identifiable number on the board for the part, but it's located just above the "T" in the word "TYPE" in the silk screen notice on the board stating "...REPLACE WITH SAME TYPE FUSE". The original part is an HER104, but I suggest replacing it with a larger diode having 400PIV and 2A rating. I used a 30D4, but any equivalent diode could be used. Proper polarity for the diode is silk screened on the board.
To fix this successfully you should to have some soldering and general electronics repair know-how. Caution: There is in excess of 300V on the power supply board even in its non-working state.