Need help HIPRO HP-D3057F3H

[POM_MJ]

I've got a HIPRO HP-D3057F3H unit with burnt some components.
if anyone has equivalent HIPRO unit, please identify R102(1%),R100,R110,R115 value for me.
Thankyou in advance.

see the pics.

[c_hegge]

Re: Need help HIPRO HP-D3057F3H

The big resistor (R110) is a 0.17Ohm (Brown, Purple, Silver, Gold)
R102 is either 110 Ohm or 1K (Brown, Brown, Black, Black, Brown)
R100 is a 1K (Brown, Black, Red, Gold)
R115 is a 10K (Brown, Black, Orange, Gold)

Please note that I haven't had a lot of experience reading resistors, which is why I told you the bands on them in case I have it wrong and why I am unsure of R102's value.

Also, although Teapo are considered to be OK in PSUs, you may want to re-cap this unit if you are considering using it in a PC. I have two identical units and both had busted teapos.

[POM_MJ]

Re: Need help HIPRO HP-D3057F3H

The big resistor (R110) is a 0.17Ohm (Brown, Purple, Silver, Gold)
R102 is either 110 Ohm or 1K (Brown, Brown, Black, Black, Brown)
R100 is a 1K (Brown, Black, Red, Gold)
R115 is a 10K (Brown, Black, Orange, Gold)

Please note that I haven't had a lot of experience reading resistors, which is why I told you the bands on them in case I have it wrong and why I am unsure of R102's value.

Also, although Teapo are considered to be OK in PSUs, you may want to re-cap this unit if you are considering using it in a PC. I have two identical units and both had busted teapos.

c_hegge, Thankyou so much for their values and color code reference.

I haven't good reading for 1% resister color code too, R102 might be 1100 ohm. (1.1K 1% ? ) just guess,
still waiting for someone here to confirm the value of this one.

Is there possibly of R102 to be other value?, just wonder .
because this one I've pulled out and see unburned side,
it's color look like brown,red,green,black,brown (1.25K 1% ? )
but I'm not sure, may be it's color was changed by heat or my faulty eyes.

This unit also had bulged teapos on 3.3V and 5VSB, I've already recaps all output caps to Samxon.GF on 5VSB, 4xSanyo.WG 2200/10 on 3.3V and 5V rails and 2xELNA.RJB 1800/16 on 12V rails.

[c_hegge]

Re: Need help HIPRO HP-D3057F3H

it's color look like brown,red,green,black,brown (1.25K 1% ? )
but I'm not sure, may be it's color was changed by heat or my faulty eyes.

Or maybe it could have been the light when I was reading the colours?

I opened my other Hipro unit and found that on it, R102 was Brown, Brown, Black, Green, Brown, so maybe a few values will work fine with this unit?

Also, After opening it, I realised that I missed a cap when I repaired it, so thanks.

[POM_MJ]

Re: Need help HIPRO HP-D3057F3H

Or maybe it could have been the light when I was reading the colours?

I opened my other Hipro unit and found that on it, R102 was Brown, Brown, Black, Green, Brown, so maybe a few values will work fine with this unit?

Also, After opening it, I realised that I missed a cap when I repaired it, so thanks.

Thanks again.

R102 could be 1.50K 1% ?
brown, green, black, brown, brown. (re-arrange)

R102 was connected between pin 4 and pin 8 of UC3843 like this circuit.
(from 230W PSU)
edit: sorry I wrote as R112 in the circuit

[POM_MJ]

Re: Need help HIPRO HP-D3057F3H

one more question, What kind of R110 0.17 ohm, and how many watt?

[c_hegge]

Re: Need help HIPRO HP-D3057F3H

Thanks again.

R102 could be 1.50K 1% ?
brown, green, black, brown, brown. (re-arrange)

R102 was connected between pin 4 and pin 8 of UC3843 like this circuit.
(from 230W PSU)

R102 could indeed be a 1.5K 1%. I don't really know which way to read the bands. I simply went from left to right, although I realise there is no right or wrong polarity for resistors.
Also, I don't know what type of resistor R110 is or what wattage. All I know is that it is a 0.17Ohm

[c_hegge]

Re: Need help HIPRO HP-D3057F3H

Also, I just noticed that it looks like it blew an IC (Circled).

Markings on my unit are:

ST CHN
UC3843B
K1649

The markings on yours look different, though. they are in different writing and the last few characters are different

[everell]

Re: Need help HIPRO HP-D3057F3H

pom_mj: That resistor and the capacitor going to the same IC pin set the oscillator frequency of the pwm chip. Therefore, the value of the resistor may vary from psu to psu.

[POM_MJ]

Re: Need help HIPRO HP-D3057F3H

Also, I just noticed that it looks like it blew an IC (Circled).

Markings on my unit are:

ST CHN
UC3843B
K1649

The markings on yours look different, though. they are in different writing and the last few characters are different

the suffix character of the UC3843 may be varie by manufacturer/package, I guess.
goodluck, I've a replacement chip without suffix look like the blew chip.

pom_mj: That resistor and the capacitor going to the same IC pin set the oscillator frequency of the pwm chip. Therefore, the value of the resistor may vary from psu to psu.

Yes, That's made me worry and that's why I need reference values of them from identical unit.

I cannot find a replacement of resister 0.17ohm/??watt, May I used 0.2ohm/5W for replacement?

[POM_MJ]

Re: Need help HIPRO HP-D3057F3H

c_hegge, thankyou so much for your help.
Now, the PSU is back operational.

+5VSB -> 5.06V
+3.3V -> 3.37V
+5V -> 5.17V
+12V -> 11.91V



Here is a pic of total damaged parts. (too many )


POM.

[c_hegge]

Re: Need help HIPRO HP-D3057F3H

No problem. Glad I could be of assistance.