NIOS 704 — TV Repairing
This is a complete, free study companion for NIOS 704 — TV Repairing — built around what the exam actually asks. The topics examiners repeat most are Safety precautions while repairing television receivers, Block diagram of television receiver, and RF tuner section and frequency conversion. The syllabus runs to 18 chapters. Below you'll find the full topic-frequency ranking, the exam paper pattern, every chapter, a step-by-step study plan, and the official downloads — everything in one place.
Everything here is free. We're an independent student resource, not the official NIOS body, so always confirm the current syllabus and exam dates on the official NIOS website before you rely on them.
Key information
- Subject code
- 704
- Level
- Class 12
- Programme
- CL12
- Exam
- On-Demand Examination System
- Conducted by
- National Institute of Open Schooling (NIOS)
Most frequently examined topics
| # | Topic | Times asked |
|---|---|---|
| 1 | Safety precautions while repairing television receivers | 1 |
| 2 | Block diagram of television receiver | 1 |
| 3 | RF tuner section and frequency conversion | 1 |
| 4 | Need and working of IF amplifier section | 1 |
| 5 | Video detector and video amplifier | 1 |
| 6 | FM sound detector and audio output section | 1 |
| 7 | Sync separation and synchronising pulses | 1 |
| 8 | Horizontal oscillator, driver and output stage | 1 |
| 9 | Vertical oscillator and vertical output stage | 1 |
| 10 | EHT generation by flyback transformer | 1 |
| 11 | Picture tube electrodes and beam control | 1 |
| 12 | PAL colour television principles | 1 |
Counted across the official previous-year question papers we have analysed for this subject. It shows what has been asked before — it does not predict what will appear in your exam. Always confirm the current syllabus on the official portal.
What you will study (chapters)
- Chapter 1
- Television System and Signal Basics
- Chapter 2
- Safety Precautions, Tools and Test Instruments
- Chapter 3
- Block Diagram of a Television Receiver
- Chapter 4
- Antenna, Feeder and Tuner Section
- Chapter 5
- RF and IF Sections
- Chapter 6
- Video Detector and Video Amplifier
- Chapter 7
- Sound IF, Detector and Audio Output Section
- Chapter 8
- Synchronising Circuits
- Chapter 9
- Vertical Oscillator and Vertical Output Section
- Chapter 10
- Horizontal Oscillator and Horizontal Output Section
- Chapter 11
- EHT Generation and Picture Tube Circuits
- Chapter 12
- Colour Television Principles
- Chapter 13
- Colour Decoder and Chroma Section
- Chapter 14
- Colour Picture Tube, Convergence and Purity Adjustments
- Chapter 15
- Television Power Supply Section
- Chapter 16
- Remote Control and Control Circuits
- Chapter 17
- Systematic Fault Finding in Television Receivers
- Chapter 18
- Repair, Alignment and Preventive Maintenance Practices
Official textbook
- NIOS 704 — TV Repairing — official textbook / study material — Free download from the official source.
How to study NIOS 704 — TV Repairing and score well
- Start with the highest-frequency topics — In NIOS 704 — TV Repairing, Safety precautions while repairing television receivers, Block diagram of television receiver, RF tuner section and frequency conversion, and Need and working of IF amplifier section appear again and again in past papers. Master these first — they return the most marks for the time you put in.
- Practise with previous-year papers — Solve the last 5–10 years of NIOS NIOS 704 — TV Repairing papers under timed, exam-like conditions. Past papers show exactly which topics repeat and how questions are worded.
- Revise actively, not passively — Write a one-page summary for each of the 18 chapters — key definitions, formulas and the points examiners reward — then re-test yourself instead of re-reading.
- Mark your answers with the official scheme — After each practice paper, score yourself against the official marking scheme. It shows how marks are awarded step-by-step, so you learn to present answers the way examiners expect.
Exam tips: how to score higher in NIOS 704 — TV Repairing
Where students lose marks: rushing the high-weightage questions, skipping the steps the marking scheme rewards, and saving easy sections for last. Read the whole paper first, attempt your strongest section early to bank marks, and always show your working.
Manage your time: split your time in proportion to the marks each section carries, keep a few minutes at the end to check, and never leave a question blank — a partial, structured answer still earns partial marks.
Frequently asked questions
What are the most important topics in NIOS 704 — TV Repairing?
Based on past papers, the most frequently asked topics include Safety precautions while repairing television receivers, Block diagram of television receiver, RF tuner section and frequency conversion. The full ranked list with how often each appears is in the "Most important topics" section above.
Where can I download NIOS 704 — TV Repairing previous-year question papers?
Official NIOS previous-year question papers are available on the official NIOS website. Open the Question Papers section for the direct link, plus the exam pattern and the topics that repeat most.
How can I prepare for NIOS 704 — TV Repairing faster?
Start with the highest-frequency topics, learn the exam pattern so you know how each section is marked, and practise with past papers. A subject-aware study tutor can quiz you on exactly these topics.
A Gyani AI tutor trained on the NIOS 704 — TV Repairing syllabus and past papers can quiz you on the most-asked topics and show you exactly what to revise.