[Ideal1st]

Well, the oscillator is not oscillating. I was unable to read any waveform from it. So it must be dead, even though it gets it’s 3v power. I’ll start sourcing one somewhere.

BTW, I checked the PSU also, it reads 5,3v while idle, should I give it a try swapping to a different one?

[Ideal1st]

I will take it to work tomorrow, they have an oscilloscope. (I never had experience with it) Shall I check if the oscillator outputs the required frequency?

[Ideal1st]

Well, I got my hands on the usb blaster and flashed the 0.90 to the OSSC

The thing didn’t boot up, so I tried reflashing. On my third attempt I got it booted up fine. I exhaled relaxed BUT!!! when I returned the thing to my TV rerouted all the cables it catched the same symptoms again. Screen blink then solid green…

Any ideas?

UPD: Back to the workbench I hooked the JTAG, powered on, got familiar “screen flash then solid green” and after around 30 seconds of standby powered on OSSC booted up! But eventually hanged… Now I am confused.

UPD2: Sometimes verification fails sometimes not:
Info (209060): Started Programmer operation at Fri Nov 1 22:29:51 2024
Info (209016): Configuring device index 1
Info (209017): Device 1 contains JTAG ID code 0x020F20DD
Info (209007): Configuration succeeded — 1 device(s) configured
Info (19845): Start Serial Flash Loader programming
Info (209018): Device 1 silicon ID is 0x14
Info (209044): Erasing ASP configuration device(s)
Info (209023): Programming device(s)
Info (209021): Performing CRC verification on device(s)
Error (209027): Verification failed for device number 1
Info (19845): End Serial Flash Loader programming
Error (209012): Operation failed
Info (209061): Ended Programmer operation at Fri Nov 1 22:30:29 2024

• This reply was modified 8 months, 3 weeks ago by Ideal1st.
• This reply was modified 8 months, 3 weeks ago by Ideal1st.
• This reply was modified 8 months, 3 weeks ago by Ideal1st.
• This reply was modified 8 months, 3 weeks ago by Ideal1st.
• This reply was modified 8 months, 3 weeks ago by Ideal1st.

[Ideal1st]

I went for getting me a blaster to start with. After an attempt to reflash I will go looking for oscilloscope. How come the oscillator can become faulty after proving to be fully operational for some time?

[Ideal1st]

Hello everyone. It looks like that I have exact same problem, though I didn’t build the OSSC 1.6, but bought one ready made. Used it for some time. The unit was kept plugged in all the time. PSU is 5v 1.5a. Yesterday I tried to play some PS1 but got no image from OSSC though HDMI signal was detected by TV. I have power cycled the OSSC and it didn’t turn on anymore. LCD backlight flashes once being blank, red led blinks once and then green led is solid.

How can I troubleshoot?

[Author]

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