Resistor [R8] on Zhinan ZN-1792 Power Supply

Hi, I have the same problem, however my burned R8 is about 680 ohms. But be aware, the diode D4, just beside R8, is also shorted. This burned D4 (a 12 Volt stabilizing diode) is the reason for the burned R8, so you have to replace them both even there is no visual damage to D4. I presume a value of 680 ohm for the R8 resistor is a realistic value........

Hi there,

I have a Provision PR-DVD2.0 with a Zhinan ZN1792-E powersupply. The C3 and R4 are broken. C3 is known, but R4 is not recognable.

Can someone help me?

Yes! Bereschuim can help you. R4 is green-black-brown. It means 500 ohms.

Now my question... Do you know the coulors from R4? (it is just underneath D4

YES!!!......Bereschuim can help!

R4 is green-black-brown, that is 500 Ohms.

Now my question...

Do you know the value of R8?

Hello Phuncz,

Did you already got an answer to your question?. If so please tell me because I have the same problem. Furthermore, the zenerdiode D4, next to the resistor R8, has been fried on my Zhinan Switch Power Supply ZN1792-E. Can you tell me anything about it (it supplies the -12V pin on the connector CN6).

Thank you very much in advance, regards, knutselaar

R4 is green-blue-braun i.e. 560 ohms

Hi Guys,

I got my dvd player working again by replacing the burned R8 and the zener diode with a 7912 voltage regulator....

The board was actually designed for this... The diode and resistor was a cheap solution for making -12... but a 7912 can do this much better...