Reply To: [STILL AT IT] Think I fried it. Heard a sizzle.

NewHome Forums OSSC & OSSC Pro OSSC – DIY Support [STILL AT IT] Think I fried it. Heard a sizzle. Reply To: [STILL AT IT] Think I fried it. Heard a sizzle.

#23933
mikklejickles
Participant

Ok so I checked the voltages on each TMDS pair out at the chip pins. This is with the cable plugged in to a tv in order to show a load.

Tx2p 2.69v
Tx2m 0.2v
Tx1p 2.64v
Tx1m 3.19v
Tx0p 2.64v
Tx0m 3.2v

Tx2m (channel 2 negative) is not showing the correct voltage as far as I can tell. It should be in the 2-3v range according to some datasheets I read about hdmi.

Maybe the it6613 chip is bad?

Reference for HDMI voltages