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PhilipsG110At times no picture.
Check C2366 (100 nF; 4822 122 33496).
PhilipsG110At times no synchronization.
Check capacitor C2366 (100 nF; 4822 122 33496).
PhilipsG110Bottom fold over
Check and replace C 2509 (4822 124 40244)
PhilipsG110Brightness too high/fly-back line visible
Check/replace IC 7465 (TEA 5101A/P; 4822 209 73832) Check/replace R3375 (180 Ohm; 4822 111
30542)
PhilipsG110
BUT11AF S.C. AFTER P.SUPP KIT FITTED AND SET
RUN I
CHECK - D6612 , 6614 ( CHECK DRIVE WAVEFORM TO BUT11 , SWITCH ON DELAY PROBABLY
MISSING )
PhilipsG110Characters wrong
Replace U 1003 (4822 212 23371) non TOP
Replace U 1003 (4822 212 23519)
PhilipsG110CHOPPER + LINE TRANSISTORS SC C2546 8n2 2kv
PhilipsG110Chopper tr blows at sw on even after fitting kit OK if mains wound up slowly - check on/off sw & Positor in degaussing cct
PhilipsG110Chopper tr blows in st/by - ok when ON D6646, D6649, Tr7655, Tr7656 & Tr7654 cleared the problem
PhilipsG110Chopper Tr BUT18AF fails periodically
Fit mod - 2 x BYD73B diodes in series between b - e of BUT18AF (anode to base). Make sure Tr7654 is
BC817 not BC845
PhilipsG110Colour drifts to the right using the S-VHS input.
Remove: R3433 and R3430. Modify: R3431 into 100 kohm (4822 051 10404). Add: R3428 - 180 ohm (4822
051 10181) between C2432/R3433 and 12 IC7425.
PhilipsG110Coloured flash on channel change and VCR features
It is possible that on the G110 chassis a coloured flash may be seen when syncs are interrupted. For
example when changing channels or on VCR playback in "still" or "search" modes. In the case of home video
recordings, the edit points may be marked by a
PhilipsG110Coloured spots in picture (local dooming).
Service solution: Mount a resistor of 220k ohms in parallel with capacitor 2349 and replace resistors 3891,
3892 and 3922 by 1k2 ohm types.
Modification introduced in products. Sets with production number QG05/AG04.
PhilipsG110Contents of memory lost
Replace IC7770 (ST24C02CP; 4822 209 62098)
Mount metal shielding 4822 466 82781 on IC7720 with earth to R 3738
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PhilipsG110Continuous page header display in subtitle Change text IC to type MAB8461P/W196 part No4822 209 62479
PhilipsG110Contrast adjustment inoperate, colour tails
Diode 6335 defective (4822 130 80446).
PhilipsG110Contrast variations with subtitling in sets with BL-CRT.
1) Add a SMD capacitor of 1nF - 5322 122 31647 between pins 3 and 4 of connector 20G of the CRT
panel.2). Add C2336 - 1nF - 5322 122 31647 between pins 3 and 4 of connector 14G on the mono carrier.
Modify R3715 into 220k - 4822 051 10224. Adjust PP valu
PhilipsG110Dead - 140v rail down. Change rectifier diodes - may check Ok when cold!
PhilipsG110Dead - BUT18AF s/c in psu Flyback tuning cap C2546 8n2 2kv low value and EHT lead s/c
PhilipsG110Dead - psu ok on dummy load C2546 8n2 & C2550 390nF in LOP stage
PhilipsG110Dead - s/c in lop stage Scan coupling cap C2550 390nf 250v s/c & bulging
PhilipsG110
DEAD BUT POWER SUPPLY WORKS ON DUMMY
LOAD . OR LIN C2546 8n2 C2550 390nF
PhilipsG110Dead chopper transistor s/c. Also change CNX83A optocoupler part No.4822 130 82034
PhilipsG110DEAD FUSE SHATTERED FIT POWER SUPPLY SERVICE KIT
PhilipsG110
DEAD HT LOW AT 20v ISOLATE PIN 3 LOPT + SET
STARTS SHORT ON 12v RAIL OR POSS Q7284
PhilipsG110Dead -PSU rep kit fitted; HT low at 40v R3616 100R risen to 1k
PhilipsG110Dead with electronic trip operated To dis trip remove R3660 - this resulted in E-W dist; T1534 315mA Wickman fuse o/c
PhilipsG110Does not function
Remove connector G15 and connect lamp to +148V. Lamp does not burn.
Replace TS7625 (BUT18AF; 4822 130 61407) Build-in SOPS repair kit (SBC7020) Apply at the same time 2
diodes (BDY73B; 4822 130 60778) in series between basis and emittor of TS7625 (anode
PhilipsG110Does not function well
Replace IC 7720 (TMP47C634N-2475; 4822 310 31844)
Important: also mount metal shielding with earth to R 3738
PhilipsG110F2 error & no sound check 9v supply to NICAM board
PhilipsG110Field bounce/rolling C2465 220µ 16v - 12v smoother
PhilipsG110Field lin poor C2509 2µ2 50v
PhilipsG110Ghosts and poor colours
SAW filter 1016 (4822 242 72374).
PhilipsG110
Goes dead when sw to st/by (no LED) - ok if sw on again
from mains D6657 20v zener
PhilipsG110
HINTS WHEN REPAIRING THE G110 POWER
SUPPLY.
HINTS WHEN REPAIRING THE G110 POWER SUPPLY.
While fitting the G110 Power supply Repair kit check fuse 1559 in the 8V feed from the Line Output
Transformer. This Fuse can fail as a result of a defective Power Supply. This 8 Volt feed is used in the Powe
PhilipsG110Int dead dry joints chip res R3619
PhilipsG110int off - no leds pin 18 lopt dry joint
PhilipsG110Int partial field collapse 1R chip res in emitter BD234 fop tr on underside of pcb
PhilipsG110Int pic blanking with fb lines 12G & H supply lines low at 6v - R3912 dry jointed
PhilipsG110Int start & no st/by D6657 16v monitor diode leaky
PhilipsG110INT START NO STBY D6657 ( 20v ZENER )
PhilipsG110Int/no col 4.43Mhz osc badly dist - fit earth to xtal clip
PhilipsG110Lines, parts of pic blanked & no Txt IC7830 SAA5231 txt proc chip
PhilipsG110Low contrast of teletext
In cases of specific complaint, the contrast in teletext mode can be increased by removing D6813
(LLZC7V5).
D6813 is a chip component mounted on the print side of the teletext decoder panel 1003.
PhilipsG110Mono/Stereo-indication switches
Connect a capacitor (1 uF; 4822 124 20722) and a resistor (1,5 MOhm; 4822 111 50452) in parallel. In
series with this circuit a diode (1N4148; 5322 130 30621) is connected (cathode on R/C). Mount this D/RC
circuit between pin 3 of IC 7220 (stereo-decoder
PhilipsG110No AV pic when scart connected AV sound ok but off air pic remains - IC7720 TMP47C634-2676 faulty
PhilipsG110no line deflection
Transistor 7545 (4822 130 61265) defect
cause: pins of line transformer 5541 bad soldered.
PhilipsG110No pic - sound ok No 200v supply to RGB as R3375 180R o/c - caused by IC7465 TEA5101A/P RGB o/p IC s/c
Page 3
PhilipsG110No picture, no sound
Remove connector G15 and connect lamp to +148V. When lamp does not light up, build-in SOPS repair kit
(SBC7020) (4822 310 20489)
Apply at the same time 2 diodes (BDY73B; 4822 130 60778) in series between basis and emitter of TS7625
(anode to basis)
PhilipsG110No picture, no sound.
Only snowy picture from presets. On pin 19 of SCART no video signal. External signal supplied to pin 20
SCART is processed well.Replace U1000 (UV816; 4822 210 10365)
PhilipsG110
No picture, sound OK. Clock (8,86 MHz) on pin 28 IC
7350 is OK
Replace IC 7350 (TDA8390/N4; 4822 209 61027)
Modifications if replacing TDA8390/N3 remove R3340; remove R3341; change R3371 into 1,2Ohm change
R3372 into 680 kOhm; remove D6336
PhilipsG110No picture, sound OK. No 8,86 Mhz on pin 28 IC7350.
Replace Q1352 (4822 242 70323)
PhilipsG110No sound nor picture. No line oscillation Starting voltage missing in line oscillator. Diode 6455 (LLZ-C2V7;4822 130 81138) defective.
PhilipsG110No sound, picture OK
Replace IC 7260 (TDA 8425/V1; 4822 209 73213)
PhilipsG110No sound, picture OK
Picture is present and the selection of programs functions. Check/replace IC 7220 (TDA 1521/N4; 4822 209
73853)
Check/replace IC 7220 (TDA 8405/V2; 4822 209 72371)
Check/replace IC 7260 (TDA 8425/V1; 4822 209 73213)
PhilipsG110
No sound, wont stop when searching & goes to st/by aft
10mins
No sig ident volts pin 13 IC7470 TDA2579A (should be 9v with sig, 0v with no sig). Replaced TDA2579A &
C2451 0µ1 sm cap which was blowing the chip
PhilipsG110No start up & trips when LOPTx dis'd TS7591 BC858 s/c
PhilipsG110No tune store TDA2579 ic
PhilipsG110no txt dry joint link on 12v supply on txt pcb
PhilipsG110No TXT; oscillator on TXT decoder does not function. Add C2802, C2803 15pF (4822 122 32504) on the teletext module U1003.
PhilipsG110Noise in picture
IC7425 (TDA4565; 4822 209 71512) defective.
PhilipsG110off ok when s/c prot line - D6657 (LLZ-C20) 16v supply monitor
PhilipsG110off if low res across lop tr (<1k) check lop tr lopt C2550, C2545 1n2 2kv
PhilipsG110One inch black band down lh side of screen Tr7594 BC848 & Tr7593 BC858 sm s/c
PhilipsG110OSD partly disappeared from the screen in BL sets.
Modify C2758 and C2702 from 12pF into 10pF (4822 122 31971).
PhilipsG110Page 811 appears spontanuously
Decoder selects page 811 and blocks
Mount new uP (IC 7800) MAB 8461P/W196 (4822 209 62479) on TXT-Decoder.
PhilipsG110Pic shifted & black line down centre of screen TDA2579 pin 12 has leak to chassis due to solder bridge
PhilipsG110Picture distorted Vertical pulse incorrect. Check capacitor C2500 (220 pF; 4822 122 31965).
PhilipsG110
Picture moved and a black bar in the middle of the
screen
Tinbridge over C2460. Pin 12 in TDA2579 leaks.
PhilipsG110Picture twists from top
Voltage of pin 8-IC7450 (TDA3654Q) on the LSP has raised to ca. 20 V.
Check diode 6451 (BZX79/C5V6; 4822 130 80954).
PhilipsG110Poor in contrast.
Replace T7413 on the picture tube PCB (BC856B; 4822 130 60373).
PhilipsG110POOR SOUND ON LH SPEAKER ON NICAM ONLY IC7530 + IC7531 LM833 ( ONE LH ONE RH )
PhilipsG110Poor width reg with brightness (HT constant) sm C2526 8n2 leaky
PhilipsG110Protection of T7625 (BUT18AF)
Protection of T7625 (BUT18AF) A production change is being introduced adding two diodes connected in
series between the base and emitter of TS7625 (anodes towards base). The type no. for the diodes is
BYD73B service code no. 4822 130 60778
Reason: To i
PhilipsG110Red flashing when changing chs using VCR. Mod see Tv Mag.
PhilipsG110Replacing TDA2579
Replacing TDA2579. During production, IC7470 TDA2579 versions N6 and N7 were replaced by
TDA2579A/N8. At the same time the values of the following components were also changed.
G110: Position N6, N7 and N8 Code C2466 4.7uF 6.8uF 4822 124 20727 C2468 1uF
PhilipsG110Replacing the EAROM
Replacing the EAROM: The memory IC in these receivers has been replaced by type ST24C02CP (code no.
4822 209 62098). On some receivers however, the circuit will have to be modified. If the ST24C02CP is
being fitted in place of an X2402 no circuit changes
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PhilipsG110
SCART SOCKET WON'T SWITCH VIDEO OVER BUT
DOES SWIT TMP47C634-2676
PhilipsG110Screen goes blnk with Txt lines on Chan change
R3917 safety res o/c,(12v supply), SAA5231 vid proc chip got hot prior to it going - caused by L5803 6Mhz
tuning coil
PhilipsG110Servicing the Philips G110 Chassis See TV Mag Dec 1995 & Nov 1996
PhilipsG110Set blocked; no control of functions.
Check solder joints of resonator 1760.
PhilipsG110Set blocks
No functions possible anymore Replace IC 7720 (TMP47C634N-2475; 4822 310 31844)
Important: also mount metal shielding with earth to R 3738
PhilipsG110Set will scan but not stop if chanel found Check pin 13 TDA2579 for 0V rising to 9V when signal present C2451 ( 0.01uF ) & IC
PhilipsG110
Slow start up & won't sw to st/by with no sound & pulsing
pic (usually after psu rebuild) R3617 220R sm o/c in psu pri
PhilipsG110Sometimes the SOPS will not start up.
Replace 3617 which is fitted across 6617 (220 ohm; 4822 111 90178)
PhilipsG110Sound abswent with "F2" in display Black wire that supplies 9v to NICAM board (to D6661 cath component side) was detached
PhilipsG110Sound distortion on lh chan - ok on fm sound TDA1543 DA converter chip in Nicam cct faulty
PhilipsG110Sound mutes spontanuously
Mount two capacitors of 100 nF (5322 121 42578; in parallel) between pin 10 IC 7220 (stereo decoder) and
earth.
PhilipsG110
Standby Thyristor goes short circuit when switching to
standby.
Checks in the Power Supply showed that TR7651 was open circuit Base/Emitter.
Service Code 4822 130 42513.
PhilipsG110Start up and run perfectly all day. But if it was 20V zener diode D6657.
PhilipsG110Striations
Under certain picture conditions, vertical striations may be seen at the left side of the picture on some
receivers only. Sets mostly affected are those fitted with a .4 version of the CRT base panel. The symptoms
can be greatly reduced or cured complet
PhilipsG110sync fault - loses line lock Tr7364 BC858 o/c due to s/c o/p print to screening can on txt pcb
PhilipsG110Text does't function
Replace U 1003 (4822 212 23371) non TOP
Replace U 1003 (4822 212 23519) TOP
PhilipsG110Ticking sound
On some receivers it may be possible to hear a ticking noise in the background when the receiver is in
external AV mode.
In cases of specific complaint, the phenomena can be reduced by modifying the NICAM panel as follows:
1. Remove chip resistors R3044
PhilipsG110To disable control cct if set trips
s/c pins 1 & 2 of opto coupler & run set on reduced mains (about 90v ac) to check psu; cause of tripping was
D6657 LI-C20 diode in sound prot line leaky
PhilipsG110Transistor 7625 (BUT18AF) lasts longer
Add two diodes BYD73B (4822 130 60778) between base and emitter of 7625 (anodes towards base).
Check the 7654 is BC817 and not BC847.
PhilipsG110Tuning unstable
Voltage on pin 11 U 1000 (Tuner) fixed
Replace U 1000 (UV 816; 4822 210 10365)
PhilipsG110Txt unlocked - appears over pic int dry joints txt pcb - sm cap in this instance
PhilipsG110txt waves about at top C2829 47µ on txt pcb
PhilipsG110Vertical bars on channel 2 and 4.
For sets equiped with a .4 picture tube panel, on channel 2 and 4 there are vertical bars (spook) visible at
the left side of the picture. To solve this problem remove on the picture tube panel capacitors 2417, 2418,
2419 and replace jumper 9302 by a cap
PhilipsG110Vertical shift incorrect, after replacing a 28" BL-CRT. Mount in parallel of R3512 a resistor of 2K2 (4822 116 52256) or 2K7 (4822 116 52263).
PhilipsG110Very low contrast.
Check DC voltage on pin 7 of IC7350. If this voltage does not rise above 1.7 volts suspect a fault in the BCL
line. Check/replace T7351 - BC848B (5322 130 41982).
Check/replace T7413 on the picture tube PCB (BC856B; 4822 130 60373).
PhilipsG110When Chopper or LOP Trs goes s/c Check C2546 8n2 2kv
PhilipsG110
White area visible on right side of screen in EXT1 mode
of BL sets.
Remove the resistors 3462 and 3464. Add a potentiometer of 47K (4822 100 11371) on the position of
R3461.
PhilipsG110Width at max or int (after LOPTx replacement) R3525 10k width pot o/c
PhilipsG110Width excessive & varies with brightness C2526 6n8 sm cap in EW mod cct leaky
Page 5
PhilipsG110Will not start; +148V = +/- 20 volts
Fault suspected in Line output stage. Disconnect pin 3 of LOT transformer. If +148V comes to normal and
line drive is achieved; reconnect pin 3 of LOT and try disconnecting R3281 (location D4 of PCB). If set starts
up, suspect T7284 audio protection tra
PhilipsG110Wont power up unless pin 3 LOPTx dis'd This is the 14v supply which feeds 12v reg. Q7284 BC858 sm in audio prot stage was leaky
PhilipsG110Won't start up - P.S squeals. Voltages lower than normal.Sound IC defective. After replacement, PS protection active- Change also 7281&7282(BC848) near sound IC
PhilipsG110Won't start up - P.S squeals. Voltages lower than normal.Sound IC defective. After replacement, PS protection active- Change also 7281&7282(BC848) near sound IC
Philips G110-PTV Addition to parts list
Addition to parts list. The EHT cable CRT to splitter (3) is available under code
number 4822 320 20192. Please add to the parts list in the G110 PTV chassis
service manual.
Philips G110-PTV Excess width C2549 10µ 50v in EW Corr cct
Philips G110-PTV Excessive width
In the case of excessive width, it is possible that C2549 (east/west circuit) is low
capacity. To improve reliability an alternative type of capacitor should be used as a
replacement. However, the dimensions of this capacitor are different from the origi
Philips G110-PTV Horizontal adjustment does not work. Picture too wide.
Elco 2549 (10uF) capacity reduced. Replace by code 4822 124 80275 (mechanically
bigger).
Philips G110-PTV Preventive action
Preventive action . After replacing a projection tube, the deflection coil may shift
downwards. To keep the deflection coil on its correct location, the coil should be glued
to the new projection tube. Adhesive 4822 390 30066 should be applied between t
Philips G110-S Bad picture sharpness
Only for 21GR6766/56, 25GR6766/56, 28GR6776/56 serial numbers SV009025 or
lower
Change 3481 SMD to 510R (4822 051 10511)
Change 3483 SMD to 100R (4822 051 10101)
Change 3484 SMD to 1k (4822 051 10102
For 21" sets: On the conductor side of the main p
Philips G110-S Picture jumping when switching from PAL to NTSC M
Place on copper side across item 2503 +VE to +VE and -VE to -VE of item 2503 a
capacitor of 1uH 20% 50V (4822 124 40242).
REMARKS: Introduced in production in week 9252
Philips G110-S
Set dead; during switch-on, LED momentarily on with
amber light.
Two possible solutions:
1. Replace uP IC7200 by TMP47C634N-R364 (4822 209 31492) and keyboard pos
1210 by 4822 218 21032
2. Upon switching on, if the set is hung, do the following initialising for the uP - Switch
off the set. Disconnect pin 41 of uP
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