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MODELS: WT-46809 / WS-55809 / WS-55819 / WS-65809 / WS-65819
INTRODUCTION
This service manual provides service instructions for PTV Models WT-46809, WS-55809 and WS-65809 which use
the V18 chassis, and PTV Models WS-55819, and WS-65819 which use the V18+ chassis. Service personnel should
read this manual thoroughly before servicing these chassis.
This service manual includes:
1. Assembly and disassembly instructions for the front and rear cabinet components.
2. Servicing of the Lenticular Screen and Fresnel Lens.
3. Servicing printed circuit boards (PCBs).
4. CRT replacement procedure.
5. Electrical adjustments.
6. Chip parts replacement procedures.
7. Circuit path diagrams.
The parts list section of this service manual includes:
1. Cabinet and screen parts.
2. Electrical parts.
Schematic and block diagrams of the above listed models are included in this service manual for better under-
standing of the circuitry. PCB drawings are also included for easy location of parts and test points.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in television receivers have special safety related characteristics. These
characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be
obtained by using replacement components rated for higher voltage, wattage, etc.
Replacement parts which have special safety characteristics are identified in this service manual.
Electrical components having such features are identified by shading on the schematic diagram and by
bold
type
in the parts list of this service manual.
The replacement for any safety part should be identical in value
and characteristics.
Summary of Contents for WS-55809
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Page 60: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 60 STANDBY SUPPLIES REGULATOR ...
Page 61: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 61 SWITCHED SUPPLIES REGULATOR ...
Page 62: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 62 VIDEO COLOR A V SWITCH CIRCUIT ...
Page 63: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 63 PCB SIGNAL Y C PATH ...
Page 64: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 64 SYNC PATH ...
Page 65: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 65 DEFLECTION CIRCUIT X RAY PROTECT ...
Page 66: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 66 SOUND CIRCUIT ...
Page 67: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 67 CONVERGENCE CIRCUIT ...
Page 68: ...MODELS WT 46809 WS 55809 WS 55819 WS 65809 WS 65819 Page 68 CONTROL CIRCUIT ...
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