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Tube TVs

TV ADMIRAL MOD.TG-2900-A does not open the entire screen horizontally

Arce
Arce
46
hace 5 años
hace 5 años
Hello colleague I got a TV the brand that mentions with problem on the screen does not open all. It is about 5 to 7cm black. I already changed all the filter of the source and also of the secondary and what is near the flaybach and nothing remains the same in + b I have 129v from already many fatty
nicomena2015
nicomena2015
9.501
hace 5 años

there are several versions ... q, bring in source ... the (Q801- KA5Q1265RF) with optocoupler ... or bring the ... Q801-STR-G5653 without optocoupler ... comment ...

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angelo32tecnico
hace 5 años

brother greeting from vzla, friend here we call him or at least I tell him and I know as vertical when the screen does not open one hundred percent at the top and bottom of the screen, and horizontal when it does not open well on the left or right ... explain well to help you the best I can.

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julio2009
julio2009
1.094
hace 5 años
hace 5 años
Did you check the vertical capacitors?
Arce
Arce
46
hace 5 años

Hello, do not check the layers monitoring of vertical friend now I verify

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Arce
Arce
46
hace 5 años

Hi Angelo, the problem is horizontal left. Right
On the left side, it is black cm I said 5 a7 cm does not open the screen.

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baldomero sanchez poot
hace 5 años
hace 5 años
Tell us how much voltage comes on the fly back + b pin, if the voltage is correct according to the diagram, you may have problems with one of the RF capacitors that are around the TSH, it can also be a yoke problem. In most cases it is low voltage + b so I ask you to check that first.
Arce
Arce
46
hace 5 años

In pin + b there are 129v friend

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Arce
Arce
46
hace 5 años

Hello friend, I tell you that I have already solved it. The problem was the C418 capacitor
A lot of thanks for helping you later

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