ICC8 POWER faults
-At switch on, light is on, EHT present then everything stops, no light or secondary power supply.
Fault 1: Check safety circuit TV01, TV02, DV02, DV08. Check is there is a S/C on the line transformer secondary. Suspect IF01 and IG01.

-High voltage sparking causing breaks and IC to blow.
Fault 1: [Line transformer and BU replaced, existing groundings checked.] Check signals on TL19 on collector (1440Vpp), base 14Vpp (ok). Check connection between line transformer and tube. Check screening of tube. Suspect CL22, CLL21.

-RP62 burns, S/C on 23V. IF01 and IG01 have been changed but fault persists. TV01, TV02 have beeen changed.
Fault 1: Unsolder pin 2 of IF01. Check DF19, DF16, DF18. Disconnect connector BR06. Suspect CL18, RL18.

-TP29 blows.
Fault 1: DP50 is S/C.

-US=150V, 24V=20V, no command signal on the line BU base.
Fault 1: Check TV01, TV02, DV08, DV02, IG01, IV01.

-After switch on switches off again. At first LED lights up red then green. High voltage built up for a short time.
After deactivating primary protective circuit, appliance runs with reduced output voltages.
Fault 1: To deactivate the primary protective circuit: open LP42 on the primary and short CP20.
Fault 2: Check secondary TP53, TP54, DP54 and DP55 and replace if necessary.
Fault 3: If necessary check precision resistors RP51-RP53.

-Power supply starts up with EHT and stops.
Fault 1: Remove RV02 and CV02 to stop the safety circuit and check the voltages. Suspect CP22 and CP24.

-Dead.
Fault 1: [No voltage at pin 9 on IV01]. Check TR18 (BC636) b/e for S/C.
Fault 2: [Low 24V, other supplies high]. Check RP62 (1R) for correct value.
Fault 3: Check CP22 (1000µF).
Fault 4: Check line driver RL15 for O/C.
Fault 5: [No start-up voltage at pin 9 of jungle IC]. Check TR18 (BC636 for S/C.
Fault 6: Check line output transistor BU508AF for S/C and RP62 for O/C. Replace field output chip
TDA8178FS and DF16.
Fault 7: Check for 10V on standby if 6V on TV06 (IV01).
Fault 8: [LED lit]. Check focus pin on base of connector on CRT panel for corrosion. Check the focus/A1
control for arcing.
Fault 9: [1.6A fuse O/C]. BUH515 chopper S/C; HT rectifier diode DP50 (BY399) S/C - fit repair kit which
includes above parts and CP29 (2.2nF), TEA2261, CP55 (220uF) and other various diodes.
Fault 10: Check RP01 and RP02 (1R2) for O/C; check CP04 (4.7nF/1kV) across mains rectifier for S/C.

-Appliance goes dead after coming on with sound for 3-5 seconds.
Fault 1: [13V supply being pulled down]. Check DP55 (5.1V zener).

-Intermittently dead.
Fault 1: Check CP55.
Fault 2: Check chopper heatsink for dry joints.

-Appliance trips after starting up.
Fault 1: Check RL11 (15R) for O/C.
Fault 2: Replace DL13 (BY397) with fast type, less than 50V.

-After several minutes appliance trips.
Fault 1: Check CP57.

-When warm appliance trips.
Fault 1: Check DV08 (13V).

-After approximately 5 seconds the appliance trips.
Fault 1: [Chopper secondary output is missing]. Check IF01 (TDA8187F).

-TV does not start up.
Fault 1: DP70 (BAV21) is leaky.

-Goes into safety mode at start up.
Fault 1: Remove the cell RV02-CV02.

-Regulation is defective.
Fault 1: [DP54 (1N4148) and zener DP55 5V1 destroyed. Track between DP69 and DP55 is also destroyed].
DP69 (BAV21) is S/C. .

-Failure to start up.
Fault 1: TV02 s/c.

-EHT rustles when set is turned on, then dies before set comes on.
Fault 1: DL13 which supplies the 13V rail is dead short, replace its smoothing cap CL14 which has likely
dropped from 1000µfd to about 800µfd in value. DL13 is mounted on the left hand side off the LOPT as you
look from the back of the set near the ferrite LOPT former and has two ferrite beads on its leads.

-UL1 90V, RL25 heats up and TL19 fails.
Fault 1: Check DL21, RL25, CL25 and DL22. Suspect IG01, LG08 and DG01.

-TV blows with noise.
Fault 1: [DP69, DP54, DP55, tracks cut and redone but fault persists]. Unsolder line 
-BU and check power
supply. DP63:40V, DP66:7V, DP65:24V. If ok, check TP69, TP54 and TP53. Suspect IP01.

-EHT comes in then switches off immediately. EHT ok if base of line transistor disconnected. Base signal
trembles. Signal ok on pin 39 of TA8569. TL17 new. Fault persists if protection neutralized.
Fault 1: Check IG01, DG01 and CG12. If ok, check 24V on RP62. If ok, suspect IF01 and DF19.

-PSU cuts out after going into standby.
Fault 1: Check 24V on RP62. Check on TR82 E:5.4V. If ok, check TP54, TP69, DP57, TR16, TR17 and TR18.

-Standby light red. No EHT. 150V at collector of line BU. 9V on pin 40 of IV01.
Fault 1: TV01 (BC858) S/C on right of CDI module in the middle of the châssis.

-TV does not start, only a single plop noise from the line supply.
Fault 1: [Line transformer has been replaced, no measurable shorts. The power supply voltage is 45V.]. Raster
ICTDA8178 (IF01) is Defective. Replace DL09, DF16, DF17, DF19 and check RP62 0.27ohm in the power
supply.

-Dead. Slight noise at switch on. No standby light. 150V on collector of line BU. No 5V on pin 42 of uP.
Fault 1: Check DP65 and RP62 (0R27). If RP62 burns, check frame amplifier TDA8178.

-Functions correctly then cuts our intermittently and goes dead 2-5 times a day. Impossible to restart by switch.
Fault 1: Replace TP20 on power supply primary. Fit a metal ring from the deflector to the earth. Adjust power
supply to 145V (110°) or 155V (planar). Redo horizontal and vertical amplitudes.

-Remains in standby.
Fault 1: 5V on pin 20 of IR01 ie. in low position. Check TR16, TR18, TR17. If ok, check 24V on DP65. If ok
check RP62 and CP59.
Fault 2: [0V on pin 40 of TDA8659. 5V on pin 42 of uP IR01]. Replace uP IR01 (ST6395).
NB: uP varies according to the version and is not compatible.

-No start up of line transformer. Standby light somes on for one sec then cuts out. No 8V on pin 40 of TA8659.
0V on pin 20 of uP IR01.
Fault 1: Check TR16, TR17 and TR18.

-Goes into safety mode 5-10 mins after start up. No sound.
Fault 1: [TP54 changed, signals ok on this transistor. 13V on DL13 ok]. Remove RV02 and CV02.

-Dead, red LED lit.
Fault 1: Replace focus pin on CRT panel and focus/A1 control.

-HT high.
Fault 1: Check zener DP55 (5V1).

-Circuit diagram.
For circuit diagram please click on the "Display circuit diagram" button in the top left-hand corner.

-Shrill twittering noise at switch on.
Fault 1: Check TP25 (BC548) for O/C.

-Trips off at switch on then goes dead.
Fault 1: Check 13V supply rectifier DL13 (BY397) for S/C.

-Shuts down at switch on.
Fault 1: Check print between 150V supply and resistor that feeds base of TP53 (1M) in control circuit for O/C.

-Dead, line transistor S/C.
Fault 1: Check TL17 (BSR51). After fitting new line transistor, also check
DF16 (BA157).

-TL19 blows immediately.
Fault 1: Check IG01, DL22, DL21 and CL22. Check if secondary of line transformer S/C. Suspect line
transformer and frame circuit.

-Intermittently blows fuse.
Fault 1: Check bridge rectifier diode and protection capacitors for intermittent S/C.

-Dead red LED lit, or attempts to start but immediately reverts to standby.
Fault 1: Check focus pin, at base connector on CRT panel