Dead dps-162kp-1 powerboard

[lotas]

The photo shows that the STR-A6069H is not the original (relabeling), but a fake.

[Danny kikkert]

The A6069H gets the vcc startup voltage on pin5 from an internal startup cell inside the ic, so you either have a short on pin5 or the new ic is bad, also replace C7918
Pin 5 must have at least 15.3vdc for the ic to start

Why did you replace r7900, R7902, C7901, d7950 ? were they bad, as that would give an idea what may have happened

The r7900 was blown, R7902 gave bad reading, the C7901 wasn't blown, but replaced (wanted to check out of cirquit, but fell on the ground and lost it some where in my barn) d7950 was shorted. Yesterday I replaced the ic with new one. Nothing changed.

Cap 7918 and D7906 did look fine in circuitry, I Wil remove them and check them later on

Thanks for the reply

[nomoresonys]

Maybe check out D7907.

[R_J]

The A6069H gets the vcc startup voltage on pin5 from an internal startup cell inside the ic, so you either have a short on pin5 or the new ic is bad, also replace C7918
Pin 5 must have at least 15.3vdc for the ic to start

Why did you replace r7900, R7902, C7901, d7950 ? were they bad, as that would give an idea what may have happened

[Diah]

once i faced dead dps-162kp after repairing all parts on primary it remain dead.. then after taking the main transformer outside the circuit i found there are cut between the coil and standing pins.

[Danny kikkert]

Hi everyone,

I have a dps-162kp-1 runtka932wjqz powerboard wich has no power at all on the cold side.
I replaced ic7903, r7900, R7902, C7901, d7950.
Checked the diodes around the chip and also the caps.
On the ic pin 5 no voltage, pin7-8= 315V
On the T7901 pin 1-4 no voltage, pin 2-3=315V
Anybody have any idea where to look further?

Any help is welcome
Thanks Danny from holland