I received a phone call from a customer who wanted to have
his TV checked by a technician and on my way home from work, I passed by his
place.
Besides the wide horizontal line also I noted the picture
was tearing down. With this without touching the screw driver I concluded the
problem is on the vertical circuit and the most probable culprit would be
capacitor which filter the vertical circuit.
I took the TV with me and within ten minutes the TV was on
the operation table on my workbench, I pulled my screw drive and upon opening
the set my eyes went straight to the secondary side of the power supply looking
for any capacitor with the top swollen and indeed I picked two capacitor with
that symptoms as you can see below.
The two capacitors were rated 470uF/35v and 100uF/35 volts
each and I pulled them out and replaced them with readily available part in my
shop but this time I decided to use the same capacitance but voltage rating 63 Volts just in case that line experience
higher voltages.
The capacitors reference on the P.C.B was C567 (470uF/35v)
and C568 (100uF/35V) respectively as you can see below.
After changing just the two capacitors, now it was time to
test the machine and I applied power to the television and this is what I saw.
The process took me less than 30 minutes and charged the customer $15 dollars, the customer was all smiles, so was I.
The process took me less than 30 minutes and charged the customer $15 dollars, the customer was all smiles, so was I.
Thank you guys.
See you in the next class.
Get CRT Television real life repair experience guide V1. today at $9.95 dollars, so it can easily pay for itself in one repair case only, click the book cover for more info on this.
Get CRT Television real life repair experience guide V1. today at $9.95 dollars, so it can easily pay for itself in one repair case only, click the book cover for more info on this.
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