HYPER ELECTRONIC MOD. 431 CHASSIS 454 INTERNAL VIEW.

A strange URSS made chassis with modular multi carrier chassis technology.

On the bottom of the lid is located the power supply panel which is interconnected with movable connectors to the other receiver chassis on front side.

The receiver chassis is even modular carrying the deflection + eht + signal units + tuners VHF and UHF.

ALL frame panels are vertically fitted, one front of the other.

The chroma unit is clearly european concept based (PHILIPS) but passive components are in similar fashion of the rest.

Th I.F unit is a clearly URSS parts based and even the rest of the tellye it's so except the tuning system which is a Policom (Italian system based of SGS chipset, all defunct factorys).


2.087.018 POWER SUPPLY

pdp116 CHROMA

as2039004-01 I.F.

02727.11.86 SYNCH AND FRAME A2550 + K953Y

TDA3560 (PHILIPS)
GENERAL DESCRIPTION
The TDA3560 is a decoder for the PAL colour television standard. It combines all functions required for the identification
and demodulation of PAL signals. Furthermore it contains a luminance amplifier, an RGB-matrix and amplifier. These
amplifiers supply output signals up to 5 V peak-to-peak (picture information) enabling direct drive of the discrete output
stages. The circuit also contains separate inputs for data insertion, analogue as well as digital, which can be used for
text display systems (e.g. (Teletext/broadcast antiope), channel number display, etc. Additional to the TDA3560, the
circuit includes the following features:
· The peak white limiter is only active during the time that the 9,3 V level at the output is exceeded. The start of the
limiting function is delayed by one line period. This avoids peak white limiting by test patterns which have abrupt
transitions from colour to white signals.
· The brightness control is obtained by inserting a variable pulse in the luminance channel. Therefore the ratio of
brightness variation and signal amplitude at the three outputs will be identical and independent of the difference in gain
of the three channels. Thus discolouring due to adjustment of contrast and brightness is avoided.
· Improved suppression of the internal RGB signals when the device is switched to external signals, and vice versa.
· Non-synchronized external RGB signals do not disturb the black level of the internal signals.
· Improved suppression of the residual 4,4 MHz signal in the RGB output stages.
· Cascoded stages in the demodulators and burst phase detector minimize the radiation of the colour demodulator
inputs.
· High current capability of the RGB outputs and the chrominance output.

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