Wednesday, September 29, 2010

PROBLEM TV POLYTRON MINIMAX series

Problem MINIMAX Polytron classic series.


MINIMAX Polytron TV series has a classic problem, namely the damage the first time this has happened since the new tv operated / purchased.

Starting manufacturer minimax generation Polytron (PT.Hartono palace electronic) to draft a new type of power supply before using TR reg which type: D1877/78 the new series uses a new type of transformer and power transistor reg. its type FET is: FS5KM/FS 7UM / FS 10UM.
Problems that often occur in this type of regulator is: if I may say "defect" because the components of the voltage regulator to supply the horizontal driver using 10uF/63Volt.Padahal capacity of the mainboard if we look at it, this capacitor size for the mold number and spacing of components capacitor leg should use a larger capacity again (eg on type MINIMAX MX 1452 MG) seen at the capacitor number: C 507 (10uF/63V).
As a result sometimes occurs 50Volt supply voltage drop to the horizontal driver after passing through two resistors 470 ohm/2watt to trans drivers horisontal. this condition of the TV is always on standby.
This damage often occurs and the first distinguished prior to damage the other.
If you get a case like this which is very difficult at times tv is turned on, although in certain circumstances to be alive, but more difficult to burn, then follow this tip's me following.
Replace the capacitor (c507 series MX1452MG) or very easy you are looking for the other type, which is closest to reply elco elco two large (1000 uF/50v) in front of a capacity 10uF/63V regulator, replaced by elco 100uf/63V or 100uF/100V.

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