1. Introducing the HA325 Horizontal Output and Flyback Tester:
A handheld, battery-operated Analyzer that isolates horizontal defects in video displays - at the job site or on the bench.

2. Strong sales of new high-resolution video displays & a large base of existing units means profitable servicing opportunities:
250 million CRT-based video displays are estimated in use today - not including PC monitors.
Sales of CRT-based video displays exceed 22 million annually.
Over 1 million High Definition sets will be sold this year.
Projection systems & large displays require on-site service & repair.

3. Why? Technicians indicate more than 50% of CRT
display failures are horizontal related.
Why?
* Horizontal problems cause confusing interaction with other circuits.
* Output stage defects cause high currents that stress or quickly burn-out costly components.
* Many loading problems caused by defective components cannot be detected with an ohmmeter.
* Shutdown conditions result in momentary operation, leaving no time to make measurements.

4. Overview of the HA325’s Features:
1. Horizontal Output Load Test:
Identifies horizontal output stage defects quickly & accurately in any CRT-based SDTV, EDTV, HDTV or computer monitor. Bench-proven in over 5,000 service centers.
2. Flyback & IHVT Load Test
Analyzes flybacks and IHVTs for internal defects.
3. Ringer Tests
Identifies shorted turns in flybacks, yokes, switching transformers or other coils.
4. Assistance Messages
Help messages guide you and simplify troubleshooting.
5. Handheld & Battery Operated
Use in the home, field, or on the bench.

5. Horizontal Output Load Test
HA325 Feature #1:
Horizontal Output Load Test
Functionally tests horizontal output stages to detect loading & defects that do not permit power-on testing.
Benefits:
Identify horizontal output stage defects before replacing & burning out replacement parts.
Quickly determine if horizontal output stage defects exist before applying AC voltage.
Determine if the horizontal output stage is the cause of power supply defects or improper operation.

6. 1. The Load Test requires 3 connections. 2. The Load Test setup
HA325 Feature #1:
1. The Load Test requires
3 connections.
2. The Load Test setup
is easy.
Simply select the setup option that matches the display’s normal operating horizontal frequency:
AUTO (HA325 automatically detects best setup)
TV 16 kHz (conventional televisions)
HD kHz (HDTV with 1080 resolution)
HD kHz (HDTV with 720 resolution)
VESA 38 kHz (computer monitor)
VESA 48 kHz (computer monitor)
VESA 64 kHz (computer monitor)
VESA 75 kHz (computer monitor)
VESA 88 kHz (computer monitor)
MANUAL
NOTE: The load test is performed with
NO AC power applied to the chassis.

7. HA325 Feature #1:
3. Perform the Load test.
The HA325 displays 3 test results: mA (B+ current), % EFF (output stage efficiency), and µS (retrace pulse time).
Good readings indicate no severe loading or timing defect in the horizontal output stage.
Use the bad readings to help pinpoint the defect.
NOTE: The load test is performed
with NO AC power applied to the chassis.

8. Integrated High Voltage transformers (IHVTs) have
many failure modes that affect chassis operation.

9. Flyback and IHVT Load Test
HA325 Feature #2:
Flyback and IHVT Load Test
Analyzes flybacks for: open primary, shorted adjacent turns, and shorts/leakage from the primary to a secondary winding ground.
Benefits:
Verify if the flyback or IHVT is defective when the Horizontal Output Load Test indicates a severe output stage defect.
Confirm IHVT defects before replacing expensive component.
Isolate AC Loading defects to primary components or to flyback & secondary circuit loads.

10. Load Test requires 3 connections. 2. The Flyback & IHVT Load Test
HA325 Feature #2:
1. The Flyback & IHVT
Load Test requires 3 connections.
2. The Flyback & IHVT Load Test
setup is easy.
Simply select a setup option that matches the flyback/IHVT’s operation:
AUTO (HA325 automatically detects best setup)
TV (conventional televisions)
Hi-Scan (HDTVs, computer monitors & high-res.
Displays>30kHz)
MANUAL

11. 3. Perform the Flyback/IHVT Load test.
HA325 Feature #2:
3. Perform the Flyback/IHVT
Load test.
The HA325 displays 3 test results: mA (primary current), % EFF (transformer efficiency), and µS (induced pulse time).
Good readings indicate a good primary winding, no shorted turns, & no primary-to-secondary leakage.
Use the bad readings to help pinpoint the defect.

12. HA325 Feature #2:
Use the Flyback/IHVT Load test to check IHVT multipliers, and screen & focus dividers.
Multiply measured voltage x100 for actual in-circuit output voltage from the IHVT.
Lower than expected voltage, or an output that cannot be varied through the proper range indicates a defect.

13. HA325 Feature #3:
Ringer Test
Analyzes flybacks & IHVT transformers, yokes, switching transformers and other coils for shorted adjacent turns.
Benefits:
Locate shorted turns that cannot be detected with an ohmmeter or with inductance value checks.
Confirm IHVT defects before replacing expensive components.

14. 1. The Ringer Test requires
HA325 Feature #3:
1. The Ringer Test requires
connections to the yoke, flyback/IHVT, switching transformer, or coil.
Yokes - typically blue and red wires
Flybacks & IHVTs - primary winding
SMPS transformers - primary winding
2. The Ringer Test setup is easy.
Apply the ringer test that matches the component that you are testing. Push and hold the appropriate Ringer Test button:
Yokes & Flybacks (deflection yokes, flybacks &
the flyback portion of IHVTs.
Coils (coils & inductors used in horizontal or other
electronic stages)
Switching Transformer (transformers used in
switching mode power supplies)

15. 3. Perform the Ringer test.
HA325 Feature #3:
3. Perform the Ringer test.
The HA325 displays a ring value in the digital display.
Good readings of 10 or more rings means the coil has no shorted turns.
A reading less than 10 rings indicates a shorted turn.
Zero rings indicates a possible open winding or very low Q (quality) yoke coil with a shorted turn.

16. HA325 Feature #4:
Assistance Messages
Instant help messages guide you to the fault and show you what parts to test. Press the ASSISTANCE button anytime to access the help displays.
Benefits:
Display the proper button to push to make a measurement
Determine if the test conditions are proper
Determine if the test results are good or bad
Advice on what to check next

17. Hand-held and battery operated
HA325 Feature #5:
Hand-held and battery operated
HA325 Accessories
Measuring just 2” x 5” x 11” & weighing approximately 2 lbs. the HA325 is ready to go where ever you need it.

18. HA325 Key Specifications HORIZ. OUTPUT LOAD TEST SETUP
Frequency Range: kHz (.5kHz increments)
VDC Range: 0-18VDC +/- .2 volts (.1V increments)
VPP Range: auto-ranged VPP, 1 volt Resolution
HORIZ. OUTPUT LOAD TEST
DC mA Range: mA (1mA resolution)
uS Range: .1 uS - 40 uS (resolution .1uS)
Efficiency Range: % (1% resolution)
Protection: Diode & Fuse, 400 volts (DC + Peak)
SETUP OPTIONS: (FLYBACK & IHVT)
Presets: AUTO (automatic setup), TV, HI-SCAN
Manual setup: adjustable 15-40kHz from 20 kHz, VDC = 1V
SETUP OPTIONS (HORIZ. OUTPUT):
Presets: AUTO (automatic setup), TV, HD1080, HD720, VESA 38 kHz, VESA 48 kHz, VESA 64kHz, VESA 75kHz, VESA 88 kHz
Manual setup: adjustable. from 30 kHz, 1V)
RINGER TEST
Range: > 10 uH, non-iron core
Sensitivity Level: Yokes & Flybacks 25%, Coils and Switching X-formers 5%
GENERAL
Case Size: 2” X 5” X 11”
Display: LCD 20 X 5
Weight: <2 lbs.
Battery life: approximately 3.5 hours with included 6-AA NiMh 7.2V 4500 AH
Recharge time: 4 hours with supplied PA273 AC Power adapter (14V, 700mA)

19. HA325 Benefits: More questions about the HA325
* Quickly indicates if a defect exists & guides you to the defect
* More 1st time completes (fewer trips back to job site)
* Reduces transports back to the shop (less cabinet damage, less labor)
* Faster diagnoses at the job site (improved technician efficiency)
* No unnecessary parts replacements (reduced costs)
* Greater customer satisfaction!
More questions about the HA325
Horizontal Output & Flyback Analyzer?
contact Sencore at or