Hello. The power supply as in the subject, and the stand-by converter was dropped, the zener diode and the resistor were obstructed. I would be grateful for the information about which diode (what voltage) and what resistor. Exactly I mean elements ZD2 and R26 visible in the attached photo.

Udostępniam zdjęcie lepszej jakości oraz dane niektórych elementów. Bardzo często uszkodzeniu ulega Transil jego dane: P6KE220A oraz ultra szybka dioda UF1007 . Koniecznie wymienić trzeba dwa kondensatory elektrolity 1000µF/10V po stronie wtórnej w PP . Poprawiłem TONI_2003

If someone had a damaged system in the housing SOT26 and wondered what this might be I already know the answer . It's a layout: SG6848 , and its newer version is: SG6858T

And without these burnt parts, the power supply starts?

The resistor should be read, regarding Zenerka it can help marking on the element SOT23-6 (IC2), drawing a piece of the scheme ...

The resistor looks like 101 but I'd rather make sure the measurement gives a lot more. IC2 does not make much sense for AAHBF and I do not know what kind of layout it is.

Hello. I once got the message that this is part of AAH8F, and not like you read AAHBF ... However, it does not change the fact that I did not find an application anyway. However, the photo I have is too poor to read the value of this resistance ... Regards. Soldering.

Thanks for correcting the mark. A small difference between B and 8 and it's easy to make mistakes. I'm still stuck with this power supply.

Thanks for the detailed photo. Replacing the diode has helped and also replaced all electrolyte capacitors prophylactically in stand-by, and the power supply works and let it stay that way ...

Identifying ZD2 and R26 Values for Tagan TG500-U26 Power Supply Repair

kyso 9301 8

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#1 6482750 02 May 2009 21:40

kyso kyso

Level 11

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Post #1
6482750 02 May 2009 21:40

Hello.
The power supply as in the subject, and the stand-by converter was dropped, the zener diode and the resistor were obstructed.
I would be grateful for the information about which diode (what voltage) and what resistor.
Exactly I mean elements ZD2 and R26 visible in the attached photo.
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#2 6482895 02 May 2009 22:11

11111olo 11111olo

Level 42

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Post #2
6482895 02 May 2009 22:11

And without these burnt parts, the power supply starts?
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#3 6483508 03 May 2009 01:59

WojtasJD WojtasJD

Level 43

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Post #3
6483508 03 May 2009 01:59

The resistor should be read, regarding Zenerka it can help marking on the element SOT23-6 (IC2), drawing a piece of the scheme ...
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#4 6483645 03 May 2009 08:55

kyso kyso

Level 11

» | Topic author Helpful post? (0)

Post #4
6483645 03 May 2009 08:55

The resistor looks like 101 but I'd rather make sure the measurement gives a lot more. IC2 does not make much sense for AAHBF and I do not know what kind of layout it is.
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#5 6486040 03 May 2009 20:30

TONI_2003 TONI_2003

Moderator

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Post #5
6486040 03 May 2009 20:30

Hello.
I once got the message that this is part of AAH8F, and not like you read AAHBF ...
However, it does not change the fact that I did not find an application anyway.
However, the photo I have is too poor to read the value of this resistance ...
Regards. Soldering.
#6 6486758 03 May 2009 23:02

kyso kyso

Level 11

» | Topic author Helpful post? (0)

Post #6
6486758 03 May 2009 23:02

Thanks for correcting the mark. A small difference between B and 8 and it's easy to make mistakes. I'm still stuck with this power supply.
Helpful post

#7 6521724 12 May 2009 18:57

Holtek Holtek

Computer PSUs specialist

» | Helpful post? (+2)

Helpful post
Post #7
6521724 12 May 2009 18:57

Udostępniam zdjęcie lepszej jakości oraz dane niektórych elementów.
Bardzo często uszkodzeniu ulega Transil jego dane: P6KE220A oraz ultra szybka dioda UF1007 .
Koniecznie wymienić trzeba dwa kondensatory elektrolity 1000µF/10V po stronie wtórnej w PP .

Poprawiłem TONI_2003
#8 6530742 14 May 2009 20:38

kyso kyso

Level 11

» | Topic author Helpful post? (0)

Post #8
6530742 14 May 2009 20:38

Thanks for the detailed photo. Replacing the diode has helped and also replaced all electrolyte capacitors prophylactically in stand-by, and the power supply works and let it stay that way ...
Helpful post

#9 7607210 28 Jan 2010 19:43

Holtek Holtek

Computer PSUs specialist

» | Helpful post? (+1)

Helpful post
Post #9
7607210 28 Jan 2010 19:43

If someone had a damaged system in the housing SOT26 and wondered what this might be I already know the answer .
It's a layout:
SG6848 , and its newer version is: SG6858T
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Topic summary

The discussion revolves around the repair of a Tagan TG500-U26 power supply, specifically focusing on identifying the ZD2 (Zener diode) and R26 (resistor) components after damage occurred. Users inquire about the specifications of these components, with suggestions to measure the resistor and reference markings on the SOT23-6 package for the Zener diode. A user mentions that the damaged parts are often related to the Transil P6KE220A and the UF1007 ultra-fast diode. Additionally, electrolytic capacitors (1000µF/10V) on the secondary side are recommended for replacement. A follow-up confirms that replacing the diode and all electrolytic capacitors resolved the power supply issues. The SG6848 and its newer version SG6858T are also identified as relevant components for the SOT26 housing.
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Identifying ZD2 and R26 Values for Tagan TG500-U26 Power Supply Repair

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