Trace Elliot V8 400W bass amp Service Manual
Contents
1. CHANGE NOTE CHANGE NOTE ANGE NOTE DATE DATE M TE 400 WATT VALVE POWER STAGE V TYPE V8 BASS ANPLFIER 5000120 2 MARCH 2000 PAUL STEVENS 07 GP02 40 FOR USE WITH 2 gt HEATERS WIRED WITH x 120mm OF 45 VR L5P O 100 350V 205 2701 270V 240N 225 62 nri TP9 2 TP Hro gr TPB 9 4 9 R R L 1 10K Ww RAB 10K 22 22u 450 EARTHI DECOUPLING TO CHASSIS COMPONENTS USED ARE OF AN APPROVED TYPE AND MUST BE REPLACED ACCORDINGLY SK3 FOOT SWITCH 24V 12 424v SWAY SOCKET FOR CONNECTION 12V FANS T U9S TXOCTTORO 0002 9S IC LIl Thr n C12 PCB PC00121x2 PARTS LIST FOR V TYPE V8 BACK BOARD ISSUE 2 5 5 00 PS Part Code Where Used PCO00121iss ueB 1 C RESISTORS M CENE 560R 1W 12K 1 4W 22K 1 4W 47K 1 4W 330K 1 4W 1M0 1 4W 72 RM560R 72 RM12K 72 RM22K 72 RM47K 72 RM330K 72 RM1M R5 R9 R10 R11 R12 CAPACITORS 72 C100P 100VCA 72 C1 5 35VT 100p 100V axial 1u5 35V tant C3 CA Insert C4 opposite way round to normal 22u 63V elect rad 72 C22 63VER SEMICONDUCTORS RC4558 72 IC RC4558P CONNECTORS pO Oooo y O SK SK3 SK4 plu 2 Swi Sw2 3 0 1 72 HEAD 3W 2 SOCKETS 14 Mono Jack SKT XLR Plug Neutrik 2 SKT JCKBNBG 3 XLR PCB M N SWITCH 73 SWT F22. 22221 22 n 2 RELAY Omron G5V 1 73 RELAY 5V SPCO RL2 614 RL5 aS es MORE LER RPM ERI B9A PCB base gold 73 VAL SOCKET G 8 1 8 of PCB 777777 5 NEN Gea 2 track modifications V TYPE V8 TEST PROCEDURE ISSUE A PS 2 3 2000 Initial Checks 1 Check the polarity of all electrolytic capacitors and diodes on power board 2 Install all fuses and valves See accompanying sheet 3 Set all rotary controls to midway position all push switches out front and rear Set to FULL POWER and turn both BIAS ADJUST pots fully clockwise Set rear panel mains switch to OFF and front panel toggle to STANDBY Connect unit to 4Q load station Connect mains socket to variac set at minimum 4 Switch unit to standby mode Gradually turn up the variac to the appropriate voltage Green lamp and front and green mains switch will light up Voltage Tests 5 Check following Test Points TP all DC TP s are w r t TPO OV TP1 TP2 6 3vac 0 6vac TP3 24V 1V TP4 12V 0 5V TP5 60V 3V TP6 60V 3V 6 Turn variac to minimum Switch from STANDBY to ON return variac to correct voltage 7 Set bias as follows Insert black DMM probe into OV hole red into V1 on rear panel Slowly turn left hand ADJUST control to give a reading of 0 300V 0 03V Insert black probe into V2 carefully rotate the right hand ADJUST to give OmV 0 01V Repeat above procedure a
3. C32 C14 C15 033 C34 C12 C20 Cel C8 26 PHILIPS 157 46471 Se ee _ SEMICONDUCTORS 11 re BET DEEP lt i sa x CONNECTORS ee ee 5 E 22 2 73 a C S G 222 M 4 72 SKT JCKBNBG STEREO 72 SKT JCKBBBG XLR FEMALE PCB 73 XLR PCB F N SK1 301 190 VDC ee ee ee SWITCHES 73 SWT SLIDER DP SWi SW2 ss eee ee Ee EE POTENTIOMETERS _ 72 PRESET 47K V RV1 RV2 Elm 2 FUSE HOLDERS j Eee asa r lt PCB panel access 72 FUS HLD PCB FS1 FS2 FS3 FS4 32mm PCB fuse clip 72 FUS HLD PDB 2 FS6 FS7 Small PCB fuse clip 72 FUS HLD PCB 4 FS8 check insertion gt e CRIMP CONNECTORS 72 CRIMP PCB TAB 1 17 STBY1 4 EARTH ee ee eee BIAS TEST POINTS 73 TERM SCREW N3 BIASO BIAS1 BIAS2 Pe FOOT OV TEST POINT PIN 73 TERM PIN EL ee ee ii aR HEATER WIRING C00 LEAD V8 HTR H1 H20 Lx sp s OCTAL VALVE BASES 73 VAL SOCKET 2 8 V1 V8 11717 a p TO220 HEATSINK G13 HS TO220 14H M3 SCREW 71 SCR M3X12PPB Part of heat sink assembl M3 WASHER 71 WAS M3INTSP S E M3 WASHER 71 WAS M3ABLK M3 NUT 71 NUT M3ZINC ai 1 INSULATING KIT 72MOS PADTO220 1 O Heat sink compound 04 Between TRG heat sink amp chassis C12 PCB V8 PREAMP PARTS LIST FOR V8 PREAMP ISSUE 1 4 5 00 PS Part Code Where Used _ Used 00120 issue 1 0220
4. formerly obsolete Part to be used when old part is used up KLWACHRE nn ee 2 ee 1K5 1 2W 72 RM1K5 5W 7 R41 R52 R55 R57 R62 R66 R69 72 RM1K5 AK 1 72 RM47K 1WATT 6 R38 R70 R72 R80 R89 R92 100K 1W 72 RM100K 1WATT R16 R50 R54 R56 R60 R64 R65 H74 R88 220K 14 4 72RM220 6 17 R18 R21 R44 R47 R76 1MO 1 AW 72 RM1M R10 R23 R24 R26 R42 R45 R49 R51 R82 R87 R90 R94 R98 R63 10M 1 4W 72 RM10M Ri R2 R4 R6 R7 R14 R34 R43 R61 R71 SCN _ 2 STAGE _ E an a CUM MEHREREN theta eee A halle 2 9 470p 630 pol 72 C470P 630VPA 4 C1 C39 C42 C43 NEW PART 4n7 400V poly box 72 C4N7 400VP O _ C 22n 400V poly box 72 C22N 400VP C16 C17 C22 C33 C40 C44 45 C47 47n 400V poly 72 C47N 400VP2 5 C5 C6 C25 C28 C38 100n 400 poly 72 C100N 400VP C9 C20 C49 C50 C51 C52 C53 220n 250 poly box 72 C220N 250VP 15u 63V electax 72 C15 40VEA 13 C4 C12 C13 C15 C18 C19 21 C24 C26 C29 C32 C34 C46 72 C22 63VER 47u 63 electrad 72 C47 63VER C14 C37 22u 450 72 C22 450VEA SEMICONDUCTORS pellex n ee ee Ces U CONNECTORS 1171 MENSEM S gt BI SWITCH 73 SWT F2UEE SW1 SW2 SW3 MH Ta ua s POTENTIOMETERS
5. E amp BASS to minimum Turn BASS to maximum check signal on scope Return to minimum Turn MIDDLE to maximum check signal on scope Return to minimum Turn TREBLE to maximum check signal on scope Return controls back to half way Push in GAIN II Signal should be clean again Switch on COMPRESSOR signal should increase slighlty Turn up LEVEL the blue LED should be lit just before full Turn off COMPRESSOR blue LED should fade out Rear Panel 20 21 22 23 24 Check that none of the rear LED s are lit Using screwdriver remove each fuse at a time Check each LED lights up Check correct functionality of 2 way foot switch socket Tip should switch from GAIN GAIN Il ring switches COMPRESSOR on off Check there is an output at the correct level from the following sockets DI OUT POST GROUND DI OUT PRE GROUND LINE OUT SEND 20mV 350mV 1 2V p p 200mV Turn MASTER control to minimum and switch unit to STANDBY Connect output to appropriate speaker cabinet and bass guitar Aurally test main features of each channel and check for any excessive hum or noise Connect to load amp sig gen set up for full power and soak test for approx 30 minutes End of test
6. TRACE ELLIOT SERVICE MANUAL NO SM00080 Date Product Code Model No Technical File No ISSUE 1 July 13 2000 T0136 V8 00080 Issued by Trace Elliot Limited Blackwater Trading Estate The Causeway Maldon Essex CM4 4GG V TYPE V8 BASS AMPLIFIER MAIN PREAMP PCB FOR USE ON ALL MODELS SEE 50 CODDANI BACK BOARD D LOOP amp LINE DUT 220 WATT VALVE POWER STAGE AND DC SUPPLY 000125 400 WATT VALVE POWER STAGE AND D SUPPLY VALVE PREAMP SECTION TRACE ELLIOT LTD V TYPE VB BASS AMP BLACKWATER TRADING ESTA 6060103 MALDON ESSEX 46C ove VAY 2000 TEL MN si SHEET 1 2 PAUL STEVENS 1621 851975 FOR USE WITH PCDOIzO CHANGE NOTE CHANGE NOTE CHANGE NOTE DATE DATE DATE Su V TYPE V8 BASS AMPLIFIER BACK PCB CHANGE NOTE CHANGE NOTE CHANGE NOTE D EFFECTS LOOP amp LINE OUT N B C4 MUST BE INSERTED OPPOSITE WAY ROUND TO AS SHOWN ca R12 SW2 ISW2 B 1 LINE OUT RETURN RC4558 COMPONENTS USED ARE OF AN APPROVED TYPE AND MUST BE REPLACED ACCORDINGLY TITLE BACK BOARD 01 LOOP amp LINE QUT PROJECT VB BASS T ER TRACE ELLIOT LTD 00019 MALDON ESSEX CM9 4GG GREAT BRITAIN DATE 6 JUNE 2000 TEL 01621 851851 DRAWN BY PAUL STEVENS ray 851975 FOR USE WITH 00121 1 9871 6 0006 16 02 11 Thr 901 CHANGE NOTE CHANGE NOTE DATE DATE DATE ISSUE ISSUE
7. UEE __ NEUE 568 AW 7Z2RM5BR 2 12K 14AW i 22K 14AW 2 AW 5 1 AW 72RM330K 1 AMO HAW 1 CAPACITORS ooo o 100p 100V axial 72 C100P 100VCA_ 2 e 22u 63V electrad 72 C22 68VER 2 piu nS SEMICONDUCTORS MEE ee RC45588 1 72 C RC4558P 1 pe usss CONNECTORS PPP ERR 3way 0 1 72HEAD3W 1 A eee MUNI SOCKETS o 4 Mono ___ 72 SKTJCKBNBG 3 XLR Plug 73 XLR PCE MN 1 ee Hail SWTCH 79SWTF2UE 2 4 1 C12 PCB PC00123xC PARTS LIST FOR V8 400W VALVE POWER BOARD ISSUE C 2 3 00 PS Part Code Where Used 000123 issue 1 1 jH i RESISTORS p ps r1 1K5 72 RM1K5 R14 R17 R20 R23 R35 R36 R37 R38 R44 R45 R46 R47 R58 R9 RIO 812 R39 R40 R56 ee s sm R27 R29 R31 ee ee R28 R30 R32 R57 oa surface of PCB with formed leads PCB MOUNT FUSE 72 FUS 125MA F_ 1 1795 ae ee 1 014 015 018 019 1N4007 72 0 4007 5 D1 011 013 017 D8 D10 012 016 warwa ns 2 CAPACITORS 2 ssp usis 10n 400V poly box C9 C19 C27 C28 C1 C2 Ci6 17 24
8. s appropriate until settings are correct The setting of the two ADJUST pots interact 8 Check biasing of other valves if necessary adjust bias again to bring all valves within the 0 270 0 330V range V1 TP15 TP17 V5 TP19 V7 TP21 V2 TP16 V4 TP18 V6 TP20 V8 TP22 9 Check the following Test Points TP7 CT 690V 15V TP8 G2 360V 15 TP9 HT1 330V 15V TP10 HT2 295V 15V TP11 HT3 270V 12V 12 HT4 270V 12V TP13 HT5 240V 10V TP14 HT6 225V 10 Sine wave tests 10 11 12 13 14 15 16 17 18 19 Insert 1Khz 20dBu 77mVrms sine wave into the PASSIVE INPUT Turn up GAIN I fully then adjust MASTER until the output starts to clip Check the power is gt 400W 40vrms 40 and the 84 display valve is fully lit Using screwdriver handle gently tap each valve and check for microphony and instability Switch to HALF POWER mode on rear panel Check there is a reduction in output power 25vrms 4Q Return to FULL POWER Turn GAIN I back to half way Insert sig gen lead into ACTIVE INPUT and then back into PASSIVE Check that when in ACTIVE the output level approximately halves Press BRIGHT signal should increase slightly Pull out GAIN Il Check signal on scope is as shown Adjust GAIN Il amp LEVEL controls to check smooth operation Return to half way Push DEEP Signal should increase slightly Push out again Turn TREBLE MIDDL
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