Delta DPS-200PB-185A Schematic

[kwakerman]

Re: Delta DPS-200PB-185A Schematic

I have also DPS-200PB-185A.
The only parts I don't know what they are are the smd resistors conected to Q501 and Q351. If you can magnify the first picture maybe I'll see the values.
01X ?
30C ?
05?X?
69Y ?
The one is connected to the pin 3 of T351 is no more there so I have no information about it.
Many thanks!

Curiosity got the better of me so I opened the one I previously repaired to have a look (would probably have done that anyway once the other one got here).

The one connected to T351/3 is a 30C (20K). The other ones in that area are two of 01X (10 Ohm), 30C (20K) (a different one), 69Y (5.11 ohm) and an 09X (12.1 ohm). I think that last one is the one you have as 05?X. Don't forget to check the ones around the CM6800 chip, if any of them are blown replace the chip too.

[rabihz]

Re: Delta DPS-200PB-185A Schematic

Hello Dears , Ihave a problem in a DPS-200PB-185A the problem is there is no short or damage resistors , but i noticed that on the 6800 vcc no power . any suggestion .

[kwakerman]

Re: Delta DPS-200PB-185A Schematic

Hello Dears , Ihave a problem in a DPS-200PB-185A the problem is there is no short or damage resistors , but i noticed that on the 6800 vcc no power . any suggestion .

From memory there is a string of resistors that feed the rectified mains to the 6800 vcc pin. Vcc needs to get up to 5v before the 6800 will start up.

[PeteS in CA]

Re: Delta DPS-200PB-185A Schematic

From memory there is a string of resistors that feed the rectified mains to the 6800 vcc pin. Vcc needs to get up to 5v before the 6800 will start up.

If the resistors in that string are high value, for example 470K or 1M, high value resistors sometimes go higher resistance or open up over time. If there isn't a bad solder joint or a short from the Vcc pin to return, one of those resistors may be open.

[kwakerman]

Re: Delta DPS-200PB-185A Schematic

If the resistors in that string are high value, for example 470K or 1M, high value resistors sometimes go higher resistance or open up over time. If there isn't a bad solder joint or a short from the Vcc pin to return, one of those resistors may be open.

These ones if I remember correctly

[PeteS in CA]

Re: Delta DPS-200PB-185A Schematic

Unfortunately, the picture is so blurry that I can "read" the values without my glasses as well as I can with my glasses. I've seen high value resistors used for the function you described in applications ranging from 384x family PWMs, Power Integrations' regulators, and PFC controllers. With no voltage at the 6800 Vcc pin either there is an open in the string of resistors (resistor or solder joint) or there is a short from the 6800 Vcc pin to return.

[luciananuta]

Re: Delta DPS-200PB-185A Schematic

Does anyone have a picture of the daughterboard on the side?
My PSU has an 8 pin IC blown on the small board and I can not read any numbers on it.

[Alex Rabinovich]

Re: Delta DPS-200PB-185A Schematic

left to right: CM6800, NCP1203, LM393, LM393

[TecnicaNTT]

Re: Delta DPS-200PB-185A Schematic

Hello
can anyone help, telling me the partnumber for the component in the picture ?
mine is blown up.
thanks

[TecnicaNTT]

Re: Delta DPS-200PB-185A Schematic

left to right: Cm6800, ncp1203, lm393, lm393

thanks !