Re: Replacing Surface Mount ICs

Replacement of surface mount ICs and flatpack ICs is not a simple task, requiring a steady hand, a magnifier lens and experience with a good fine-tip soldering
iron. If you can not locate a coil of copper de-soldering wick/braid, a possible substitute is to strip the copper braid shield from 25cm of thin coaxial cable and
stretch it slightly before use. Cut off and discard the braid as it fills with surplus solder, or move along it to an unused area.
An alternative method for removing a damaged surface-mount IC is to cut all...

Re: Replacing Surface Mount ICs

With Iron Wire:
1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC,
you can remove it easily.
2. Affix the wire to a workbench or solid mounting point. (Insert the free end of the iron wire under the row of pins to be lifted, at the SM IC body, and pull
on the free end as the pins are heated).
3. While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as...

There is some useful advice contained in the Philips LCD TV chassis FL9.1 Service Manual for the 32PFL3504D/F7 to 32PFL3514D/F7 models that I have not seen elesewhere. While a large service organisation might have hot-air desoldering guns with attachments to fit most integrated circuit packages, the amateur will find that the task of replacing surface mount ICs without inflicting damage to components and circuit board is not easy.

With Soldering Iron:
1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied...

Re: Philips 32PFL3403d/27 LCD NO POWER

What a fascinating piece of diagnosis to follow - I would say that a serviceman's charge-out hours would be up to about $350 by now? Fortunate that they are not all so difficult to trace. I was about to buy the same Philips model (used for 6 months), but it is a worry about the quality of components inside the cheaper LCD TVs. Best service manual that I have seen so far. It seems that all the low-price LCD TVs in known and unknown brand names tend to be assembled in China or elsewhere in Asia, while the expensive sets with LED backlighting,...