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View Full Version : Maintenance, Troubleshooting & Repair



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  1. Who uses what for chassis soldering?
  2. Peavey Mace VT burned 400 ohm power supply resistor?
  3. JVM 205H red plating V3 blowing 500ma ht fuse and VERY low Bias voltage on v3
  4. Fender 5150 III low output
  5. fender blues deluxe reissue no reverb
  6. Fender Bronco 40 Power Supply Troubleshooting
  7. Ampeg BA115 Transistor Replacement?
  8. Sunn 1200S Restoration project
  9. Peavey Transtube Bandit (1994) Intermittent Sound, Nasty Distortion
  10. Crate Palomino V32
  11. Carvin BX micro Bass MB210
  12. Peavey Classic VTX transformer OEM
  13. Marshall 8080 Issues
  14. Recommendations needed for capacitance tester.
  15. DV Mark Triple 6 new release - Questions
  16. Fender Acoustasonic SFX ii Repair
  17. Acoustic 320 repairs
  18. Aguilar tone hammer issue....schematic?
  19. QSC PLX2402 O/P stage heating
  20. Traynor YGL-3 Problems with PI and supply voltages
  21. Oh my, am I losing it?
  22. Marshall Haze 40 frying bacon sound
  23. Replacement for 4.7uf polyster Capacitor.
  24. Pin configuration of Din Plug for Genz Benz El Diablo 60
  25. Suggestions For Local Electronics Supply Shop: Mequon/Milwaukee WI Area
  26. Fender Hot Rod socket replacement
  27. Peavey Windsor - Oscillating at effects loop?!
  28. Peavey XR 600 400 R
  29. RCF Art 310A Problem
  30. Transformer wiring?
  31. Ashdown Mag 300
  32. Mesa Boogie 50 50 heater resistors toasted
  33. Buzzing Hot Rod Deluxe.
  34. Mesa Boogie High Phase Inverter Plate Voltage and Blocking Distortion
  35. Fender Stage 160 Heart Beating Noise Issue
  36. AC15C1 burning power supply resistor
  37. Hiwatt Lead 30 volume loss
  38. SWR 2x10c distortion & low output
  39. Carlsbro 60 TC power supply
  40. Fender SF Revrb Unit conversion to 6G15 Circuit
  41. Tele-Star M20R ss amp
  42. Can I use 6550s in my JTM45 clone ?
  43. Output transformer protection, flyback diodes, MOVs, 2KV capacitors,
  44. Brand New Here
  45. Bad noise (static?) - asking help for troubleshooting
  46. Marshall TSL:100 bias drift problem
  47. dB opera 405 distortion
  48. Ace Tone Bass-6 Motorboating
  49. Fender BXR 200 Bass Head
  50. KMD XV100SD Low Output and Tubes Red Plating
  51. bad input jacks on Fender SS Princeton Chorus, replacement ???
  52. Which chip is better for preamp Ad8512, opa2134, or ne5532?
  53. A couple questiosn about installing VVR in Fender Champ
  54. Tech 21 Trademark 10 Pot value wanted
  55. Vox AC30 blowing F2 fuse
  56. '65 Deluxe Reverb RI. Blown resitor.
  57. Beginner's ocilliscope recommendations please
  58. Kay 703C or not
  59. Shocking
  60. MojoTone High Voltage FX Loop
  61. 120 Hz Hum in Bassman Clone
  62. NOISY mesa boogie NOMAD 55
  63. Fused Capacitor lead
  64. DC Leakage Mystery
  65. 5E3 w/ DC at input jack
  66. Ashdown BTA-400 Bass Amp Severe Clipping
  67. SVT PT go boom. How can one protect PT secondaries?
  68. Fender squier 15 DC voltage on the output
  69. Acoustic 201 cab...where does the horn connect??
  70. Fender Bassman: sound cutting out
  71. Fender G Dec Jr signal loss at Codec
  72. Peavey KB100 no sound
  73. Distortion/low voltage problem...
  74. AC10 clicky trem
  75. Standby Switch squeal/bark sound on Marshall or Fender
  76. Yorkville AP812 powered mixer
  77. 7025, insulating spacer switcharoo?
  78. Master Volume in Dr.Z Prescription ES with Cathode Bias
  79. Toroidal Transformer Malady
  80. Surround Dope
  81. Diagnosing a Haysee30
  82. 1962 Fender Twin Caps
  83. Orange TH30: weird components ?
  84. RG50TC stuck in clean channel
  85. Anyone know how to find this pot?
  86. fender twin reverb
  87. Fender Princeton Chorus DSP Crackle and Pop
  88. Marshall DSL100 replacement boards
  89. Polytone Mini Brute V Preamp to power amp connection?
  90. 65 Vibro champ voltage check?
  91. EBS 350, 650 Amps...horrible mfgr process with heat sinking (what's that?)
  92. Peavey Valve King 112 Reverb cutting out.
  93. Laney Nexus Tube amp bias, balance etc.
  94. Heater wire routing question
  95. AC30C2 Tremelo issue
  96. Jet City 100
  97. 2266c problem, looking for some guidance
  98. Marshall ValveState VS100R white noise / buzz problems
  99. Hammond M-100 organ
  100. Hiwatt DR103 Fuse Blowing
  101. Engl Screamer 50 screen resistors
  102. Ampeg BA-115 keeps burning rectifiers...help please
  103. Slo Clone LDR switching issues
  104. Mesa Boogie Dual Rectifier 2 channel - Distorted clean sound
  105. Anyone have a schematic for a Fender solid state Bassman Compact
  106. Marshall 1959HW 100W Plexi Oscillation
  107. Marshall 6100 noise
  108. Is it possible and/or likely for a preamp tube failure to cause a mains fuse to blow?
  109. Peavey Classic 30 Hum
  110. Blackface Vibrolux Clone - Static from both (new) volume pots
  111. Weird values in heater virtual ground? SF Princeton Reverb
  112. Peavey Triumph 120 head - power tube board is burnt
  113. Egnator rebel 30 channel switching problem
  114. Fender Bassman 1200 output problem
  115. Marshall VS65
  116. national glenwood model 90
  117. new 65 DRRI reverb issues
  118. tiny terror tranny?
  119. Marshall VS102R Footswitch Issue
  120. SWR Workingman's 12 - guts pic needed
  121. Behringer vt100fxh not powering on.
  122. Marshall DSL 40C tone stack
  123. Need help with Crate Blue Voodoo 6212
  124. Ampeg SVTCL
  125. Low voltage on plates of Traynor YCV40
  126. bias?
  127. Marshall JCM 2000 60W HELP!!
  128. Don't fix it if it ain't broken...
  129. Changing output valves TCT100H
  130. Marshall JTM30 bias mod problem & IC3 (LM348) problem
  131. Peavey Valveking 100 Head
  132. Fender 65 Princton Reverb bias problem
  133. TrampTraceElliotPotentiometers
  134. Hartke HA5500 troubleshooting
  135. JCM800 decoupling/grounding/oscillation/normal phenomenon
  136. Mackie CFX 20 Mk2
  137. Marshall VS65R - amp powers on but no sound
  138. Epiphone Valve Senior problem
  139. Roland Micro Cube IC
  140. Fender "the twin" hum
  141. Peavey Windsor Studio popping noise
  142. Help with Mesa Boogie Maverick Dual Rectifier head
  143. Harmony H306: no output
  144. Tune up advice for 65 VibroChamp
  145. Randall bass amp
  146. DSL PT physical hum
  147. SWR 750x problem
  148. What do you use for screening foil
  149. Stumped by a scratchy pot
  150. Making Assumptions
  151. Lateral Mosfets
  152. Intermittent output Fender Vibrolux Reverb
  153. Crate VTX200s Assistance
  154. B52 AT212 gain switch not working
  155. New build - 5E7 - Bias Question
  156. Vox aga150
  157. SF MV Twin Reverb - Noisy vibrato channel troubleshooting advice
  158. Need Help with 5150-III 50W channel switching problem
  159. Ampeg SVT-VR CH 2 Buzz Help
  160. Reverb oscillation in SF Pro Reverb (Master Volume)
  161. Marshall JMP MKII non master volume
  162. Carvin X60B help.
  163. Eden WT800 bridged mono not inverting
  164. Need help with Fender Ultimate Chorus - one amp side dead
  165. Boutique blowing fuses
  166. behringer eurorack ub2442fx-pro
  167. peavey 6505 + 112 lead channel noise / previous board repairs.
  168. RG - One Spot
  169. Gallien-Krueger MB500
  170. Tascam 688
  171. JC-80 bad transformer and where to get one
  172. 5C2 princeton clone build
  173. Reverb Tank bobbins - good question for Juan?
  174. Allen accomplice making intermittent chirping and static
  175. 100Hz Hum diagnosis
  176. Ampeg BA 210 combo bass amp help please
  177. Marshall 5275 Reverb Problem
  178. Silvertone Twin Twelve 1484 - Intermittant Reverb Squeal if Rev Depth Knob Turned On
  179. Fender Deluxe 112 bad signal after replacing tip142 & tip147
  180. Wem Dominator Bass amp Problems
  181. Tsl 602 pops fuse when turned off
  182. Single Rectifier - Burnt Resistors in V1 Preamp Stage
  183. Noise after recapping tube amp
  184. Oscilloscope For Amp Maintenance?
  185. Blues Deville switching stuff....oh boy....
  186. Peavey Triple X leaking electrolyte
  187. Marshall DSL 100H
  188. Ampeg SVT-350T
  189. EC Tremolux Service Manual
  190. Ampeg BA115HP speaker popping
  191. Fender deluxe 112 Plus. Really hot but sounding fine?
  192. Randall part #
  193. Peavey VTM 60 Clean Channel?
  194. Peavey Classic VTX
  195. line 6 spider iii 15 no Power
  196. Acoustic Model 115 - Reverb Not Working
  197. Spider Valve HD100 input/codec board burnt
  198. Peavey Heritage VTX, no sound output
  199. DV Mark DV40 112 40W Combo Reverb Volume Issue
  200. Sound City 30C Mark 6 - occasional soft motor boating
  201. Hartke HS 1200 bass amp transformer needed
  202. New 2203 pops
  203. Think I just blew my power transformer
  204. Marshall SL5
  205. Behringer LPA1180 Power supply in short
  206. KMD XV100SD Tube Amp has FX Loop problem - please help
  207. Reverb isolator replacement for Gibson Saturn amp
  208. Lost inside Acoustic G120 2x12 (Model 127)
  209. Vox channel switch pop
  210. stabilizing an amp
  211. 73 Vibro Champ : No Sound
  212. Fender Deluxe 112 plus bad buzz
  213. How do I tell the different primary wires in a power tranny?
  214. Peavey Heritage VTX driver checking?
  215. Sunn Sentura II - Cap PolarityQuestion
  216. Thermal Switch Kicking On/Off (Peavey XR-600B series 400HB)
  217. New KT66 opinions
  218. Crate GT1200H Effects Insert
  219. Weak/Distorted Sound from old Roland Cube 40 (Orange)
  220. .How much tolex will you need to covered cabinet
  221. 65 Fender Twin Reissue crackles at high volume
  222. Early 70's Fender Princeton
  223. Crate GT1200H Volume Loss after 20-30 min's
  224. Ampeg SVT-3 Pro - starts up - then fan cuts out before relay switches - no output.
  225. Crate V50
  226. Effiective ways to test multi section cap can?
  227. Laney GH50L hum
  228. Ceriatone JTM45 blowing mains fuse
  229. Behringer k3000fx blowing fuses
  230. AIDEAN MESIA 100 troubles with hum and reverb
  231. Anyone need a tre' bitchin' dummy load?
  232. Carvin Sx-200 blown switching power supply
  233. '62 JMI era Vox AC30 rebuild help!
  234. Peavey original Backstage schematics
  235. Conductive Fibre Eyelet Board? Vintage Fender
  236. Marshall 40th Anniversary Super 100 JTM 45/100 hums.
  237. Troubles Finding This Part
  238. QSC PWM IC
  239. parallel caps in Marshall curcuit
  240. Ampeg SVT-II (non-pro) craps out after a few minutes
  241. 1965 Supro Amp
  242. Princeton crackles when I play chords
  243. fender pro junior mod failure
  244. Bias mod Peavey VTM 60
  245. newer fender octave BS
  246. Drip Edge '69 Deluxe Reverb Chassis pic for your consideration
  247. Low gain vs. high gain tubes
  248. bassman burnout
  249. Redmere Soloist in a bushel basket
  250. Assistance replacing an impedance selector on Vintage Marshall JCM 800