Comments on: Servicing Philips CTV

By: yi

yi — Sun, 06 May 2018 08:06:12 +0000

I guess the burnt area became conductive a bit.

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By: Michael

Michael — Sun, 25 Mar 2018 20:00:17 +0000

In reply to N Bwale.

Perhaps the horuzontal trafo is causng a heavy load on the smps,why not take it out and check if the smps works ok.

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By: Parasuraman

Parasuraman — Sun, 25 Mar 2018 13:59:18 +0000

In reply to Parasuraman.

Read 100W Bulb

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By: Parasuraman

Parasuraman — Sun, 25 Mar 2018 13:58:30 +0000

In reply to N Bwale.

Disconnect resistor going to B+ of LOT (FBT). Connect a 100 W as a load to B+ rail. Switch on, check voltage. It should be around 110 or more (sometimes 140 also used). To know exactly, look for a 3 legged regulator IC in that input line. Check its datasheet online to know its output voltage. If you are getting correct reading, power supply is OK. Else look for defects in primary and secondary. If PS is OK, you may have to check audio, vertical and horizontal sections.

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By: Humberto

Humberto — Sat, 24 Mar 2018 18:16:06 +0000

Another job done very well. Congrats.

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By: N Bwale

N Bwale — Fri, 23 Mar 2018 14:59:43 +0000

That was good,at last it was repaired. My young brother 21"Philips TV was dead.After opening,found nothing wrong.Tested power to LOP transistor collector point, it was 77Vdc, not good to light CRT tube. P/se help to light it up.

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By: Tyrone.

Tyrone. — Fri, 23 Mar 2018 14:15:23 +0000

Very good Parasuraman.

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By: Mohammed Kasim

Mohammed Kasim — Fri, 23 Mar 2018 03:35:35 +0000

In reply to Parasuraman.

Thanks for the valuable tips.

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By: Parasuraman

Parasuraman — Wed, 21 Mar 2018 01:38:34 +0000

In reply to Mohammed Kasim.

The method for adjusting screen voltage in Philips CRT tvs, is to keep pressing the channel button up and/or down, then adjust the screen voltage. At one point it will remain still. Then leave it and put a mark on LOT for guidance in future.

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By: Andrew F. Ali

Andrew F. Ali — Tue, 20 Mar 2018 13:18:23 +0000

I have found that with CRT TVs the ESR on electrolytic capacitors was not critical. What was critical was the capacitance and most times bad-caps showed up as bulging or vented at the pins or at the top. I places where ESR is critical you would notice TANTALUM type electrolytic capacitors. Good job.

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