Comments on: Electronic Repair Questions/Answers & Testimonials Part 11

By: Jestine Yong

Jestine Yong — Sat, 16 Aug 2014 08:31:58 +0000

In reply to Ben.

Hi Ben,
The best is to locate the schematic/service manual as this type of flyback can have few number and very confusing. It can be the TFBxxxxx or Sampo 05B16 OR even the FM1077.

Jestine

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By: Ben

Ben — Fri, 15 Aug 2014 22:05:35 +0000

What is the model number of EHT of Compaq MV7540 monitor.
All I could find written on the damaged sticker is:

SAMPO 05B16
# E159656 C
FLO0261 A
6133070251P
TFB**** A
FE5B39CT FM1077

The 3 or 4-digit number in place of **** can't be read as the sticker got scratched. And there's just a symbol instead of #, rest exactly like this.
And on the body printed with grey:

▪TLF271-01J-33
5Y11.B C
And on the bar printed with black:

H58008G6

I need help...

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By: Jestine Yong

Jestine Yong — Fri, 19 Oct 2012 01:35:24 +0000

In reply to kumar.

Hi Kumar,

It could be flyback. try gently tap the flyback core to see if there is any changes or not.

Jestine

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By: kumar

kumar — Wed, 17 Oct 2012 18:25:13 +0000

i have a hp 7540 monitor,its working fine,but produse some noise in FBT.if i open the dos mode
its getting noise. if i change the frequence 60 hz then no issue,tis working fine.
what is the solution for this problem??

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By: Jestine Yong

Jestine Yong — Fri, 12 Oct 2012 17:55:49 +0000

In reply to Krishna Yogi.

Hi Krishna,

Do you have other email because your email was bounced?

Jestine

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By: Jestine Yong

Jestine Yong — Fri, 12 Oct 2012 17:45:41 +0000

In reply to Krishna Yogi.

Hi Krishna,

I have sent an email to you.
Jestine

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By: Krishna Yogi

Krishna Yogi — Fri, 12 Oct 2012 16:24:28 +0000

Hi sir,
I want to lean your ebook of Monitor Repairing, Can you halp me how to i can read your e book?

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By: Levis wanjala

Levis wanjala — Fri, 09 Dec 2011 11:16:27 +0000

Hi sir,i av an airstar inverter,but it keeps burning the npn transistor after overheating,i replaced with 3205,50n06,z44,but they burnt and now it no longer produces AC bt burns even be4 switching,what might b the problem and the way 2 correct it

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By: admin

admin — Fri, 17 Jun 2011 13:26:06 +0000

Hi Raju,

Does the HOT have base waveform? If no there will be no high voltage.

Jestine

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By: raju

raju — Fri, 17 Jun 2011 00:24:37 +0000

sir
7540 set -no eht no raster smps supllye ok output transister ok
but no screen light

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