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View Full Version : Maintenance, Troubleshooting & Repair



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  1. Mesa Rectifier Problem
  2. SF Twin - bad 6L6s?
  3. Behringer 180W bias setting
  4. Fixing hum in Roland Cube 60
  5. how far will you go to save/re-use parts?
  6. Peavey Classic 30 with very low volume.
  7. Leaky cap-or not?
  8. 63 Vibroverb bias vary trem motorboating problem
  9. B-52 effects loops
  10. What is a good replacement for ceramic caps (Fender Twin)
  11. Danelectro Centurion Amp Vibrato Issues
  12. Hughes And Kettner Trilogy noise
  13. Weird transformer...?!
  14. servicing amps?
  15. a tip for restoring tolex
  16. Ampeg B2 relay problem
  17. Peavey Classic 50 head no reverb
  18. behringer pmx2000 Wires hooked up wrong.
  19. Marshall TSL100 Main Board
  20. 6ax5 rectifier tube
  21. Replacement OT for vintage Rickenbacker E12 amp
  22. Electrolytic caps useful life?
  23. Carvin xb100 makes noise at high volume
  24. Help! Bandmate ran amps in series and now one has volume problem.
  25. The Twin....knob question
  26. silvertone 1484 looses volume
  27. Weak Reverb
  28. Carvin MTS3200 reverb tank
  29. Question using a extension Cabinet with combo.
  30. Grounded
  31. Need Help Biasing Marshall dsl 100 (1999)
  32. Anyone with a good memory??
  33. Fender Stage 112 Reverb doesnt work??
  34. Help with Hartke
  35. sunn coliseum 300
  36. hartke 3500 bad input
  37. Marshall Valvestate 8280 Distorting on lows and slugish
  38. Marshall AVT150
  39. Jay turser Classic 25 Input Imp
  40. Refurbing and blackfacing my Silverface Twin
  41. help with Carvin amp
  42. 65' Fender BF twin reverb-Tremolo / Vibrato non-functioning help!
  43. Traynor Custom Valve 80 problem
  44. 'color banded' cap replacement
  45. Acoustic 220=speaker killer
  46. pevey valveking 100 212 question
  47. I see Crate's Problem with the Palomino V32
  48. Adding standby
  49. Peavey session 500 (400 B/Gmodule)
  50. need leads or ideas for a replacement Fender switched pot
  51. marshall vs 100
  52. Help! new Tung Sol 6l6gc Tubes make terrible"sqwaking" distortion sound on loud notes
  53. Need supplier for 15mm 20kA pot
  54. Inductors question
  55. Simple octal tube socket question
  56. Old white mallory electrolytic caps..no capacitance ratings..any advise?
  57. marshall jcm900 valve pin voltages
  58. 30k 10 Watt Resistor
  59. Gibson Gibsonette recap - couple Qs.
  60. New Ampeg SVT Classic Problem
  61. Acoustic nonsense?
  62. Traynor BassMate EL84s full of blackedned getter material?
  63. 50 watt OT in 100 watt amp with 2 x power tubes removed
  64. Need help with marshall 6100
  65. Any recommendations for a decent digital scope?
  66. Vox Valvetronix AD120VT power selector
  67. Fender TwinAmp switch between channel on itīs own
  68. Need help debugging SF Twin
  69. Clever way to remove Peavey PWR tube board?
  70. DC Offset?
  71. amp sounds like a ring modulator? why?
  72. Thanks to this forum!
  73. Rivera hundred duo twelve blows fuses
  74. Amp problem - help?
  75. Ping Enzo
  76. peavey standard series 260
  77. Who has a Kalamazoo Model 2?
  78. Marshall JCM2000 DSL100 reverb tank question
  79. wierd intermittant pilot light in twin twelve
  80. Early 70's Vibrolux "snare drum" distortion
  81. Silverface princeton vibrato issue
  82. 1M audio dual pot options?
  83. Faulty Laney HCM30R Guitar Amplifer
  84. bias pot on traynor yrm-1 and mexican voltage
  85. What is this component?
  86. Fender Blues Junior Power Problem Help
  87. ibanez amp
  88. Peavey standard series 260 mixed up controls
  89. SWR Workingman's 10 bass amp (C6 10UF exploded, TDA7294 partially melted))
  90. Crossover Fuse Limiter Bulb
  91. 1974 Deluxe Reverb.....Reverb control at 6+ = SQUEAL!
  92. Master Volume ideas...
  93. Fender Ultra Chorus - Noise
  94. PV Valveking Head
  95. Peavey Classic 50, no lead channel
  96. Fender Super 210 (Did Fender make this junk)
  97. Eden Nemesis crossover hookup question
  98. Peavey low output
  99. speaker setup. Options and discussion
  100. Mesa Rectifier Recording Preamp acting up.
  101. no voltages on pins, not even heaters!??
  102. Don't F**k with coupling caps...
  103. Speaker cab x-over relay function?
  104. acoustisonic problem
  105. JCM2000 TSL Losing low End
  106. x4 6L6 OT ok for duet?
  107. Acoustic Control Corporation 150b-Low steady crackle issue
  108. Marshall JVM fuse
  109. Crate V32 palomino and GTD120 Problems
  110. Fender Deluxe 112 Plus _Send/Return problem
  111. Weak tremolo due to low grid voltage off tremolo tube?
  112. Broken input jack on Amp
  113. Crate Stealth GT50 bias help
  114. total newbie, question on avt150 parts
  115. Ampeg SVT AV
  116. 1979 Fender Twin Reverb - can't turn off reverb
  117. Dsl 100
  118. How I fixed my DSL401 Overheating Problem
  119. +500V capacitor suggestions
  120. mesa tube complement?
  121. Amp repairs anywhere near Cheyenne, WY?
  122. Cap Polarity
  123. BAD Buzz with SWR Bass-350
  124. Gibson Minuteman
  125. valvulator v-1
  126. Harmony 400.... loud hum
  127. Fender Red Knob Twin questions
  128. new 6505+ crackle and pop
  129. need help for a fender twin-amp
  130. DSL50 Hum HELP
  131. overheating Gibson GA 5T[ 1960 model].
  132. Acoustic 470 fuse blower
  133. Mesa DR hot PT
  134. Fender Prosonic - NOISE
  135. Plate voltage is too low on output valves.
  136. peavey bass amp makes a loud distorted noise about 5-10 minutes of playing
  137. super reverb reverb too loud!!
  138. Reverb pan for Gibson Vangaurd GA77RVT
  139. Peavey cs-400 Blowing Fuse
  140. what is this used for?
  141. Vibrolux Reverb is too Strong!
  142. Marshall Valvestate VS100R Transistors Blowing
  143. fender pro junior pcb
  144. Can I place my amp sideways?
  145. 45 ohm speakers?
  146. Mesa Subway Blues Wiring/Mod Question
  147. Fender Footswitch Oddity?
  148. MG100HDFX intermittent gain problem
  149. 5150 combo issue
  150. MESA Maverick 2x12 (1993) Lead Channel Bleed to Rhythm Channel
  151. question : are 1n4005 diodes ok for twin reverb?
  152. Crate fxt120 - smoking transformer & loud hum
  153. Marshall JCM 2000 DSL volume problem
  154. Peavey TNT 115S Speaker Replacement
  155. Sovtek mig 50 Transformerchange II
  156. peavey deuce /low power problem
  157. Marshall JCM900/4100 PS and channel switching problem
  158. Hot Glue Removal
  159. Peavey Triple XXX replacement footswitch cable
  160. fender super 60
  161. need Behringer part ASAP !!
  162. Blues Jr. reverb problems!
  163. Ampeg J-12B (Jorio) has high voltage on 6SL7
  164. Ampeg SVT-III Pro issue
  165. Marshall MG100HDFX
  166. Hot Rod Problems
  167. Assembling an Ampeg SR-212RT
  168. Power Transfromer Post Mortem
  169. Discrete SS Guitar Amp Troubleshooting
  170. Acoustic 370 repair
  171. Valve Junior - filaments intermittent
  172. Fender Frontman popping out
  173. Using larger caps in a Vox Buckingham
  174. Laid off, yet again.
  175. Help identifying transformers in a second hand build please
  176. Mesa Nomad 45 preamp tube acting up?
  177. Request : Troubleshooting Flow Chart
  178. Testing Tubes
  179. Earth Sound Research PA2000
  180. Marshall AVT150H
  181. s/f princeton fries speakers wtf?
  182. Boogie MKIII - reverb missing, need help restoring
  183. Fender Bandmaster (AB763) issues
  184. Roland JC-120H Hiss
  185. Fender Studio Lead Problem
  186. Super Reverb reverb problem
  187. Old Newcomb G-12 guitar amp
  188. Marshall JCM 900 Red Plating...
  189. music man circuit breaker
  190. ugly distortion in twin reverb
  191. s/f Princeton odd bass note distortion
  192. Fender M-80 chorus OD Channel Squeal
  193. Impedence Selector for Rivera Knucklehead
  194. Marshall vs100, hums, no sound from speakers or headphones
  195. B52 Low Volume
  196. Fender Dual Showman bias/balancing
  197. Sub for op-amp MC33078
  198. Peavey 5150 EVH filament problem
  199. Fender "the twin" footswitch
  200. Big Problem With My Silvertone 1484 Twin Twelve Head
  201. need help bleeding PLEASE!
  202. peavey classic 30
  203. vox ac30 cc2 blowing fuses and rectifiers sparking????
  204. any damage from mismatching tubes?
  205. V/I Curve Tracer project??
  206. Fender Twin Reverb massive hum!
  207. Marshall MG15 CDR. Please Help
  208. Crate V100
  209. Gibson GSS-100 Tremolo/Vibrato
  210. Marshall AVT150H Problems
  211. TRAYNOR GUITARMATE 3 NO REVERB or TREMELO
  212. Marshall AVT50 Valvestate 200 Combo blowing main fuse
  213. Torque Bass T100... amp
  214. loud hum on power up
  215. humming choke on DRRI?
  216. bugera 333xl schemaics ????
  217. Possible bad output transformer in 5150 combo
  218. Fender Stage 160 need help
  219. Volume drop on modded JCM 800
  220. Which solid state parts to stock
  221. Rust on Marshall chassis removal
  222. Noisy 'wires' (seriously...)
  223. Peavey Classic 400 won't power up
  224. Ampeg SVT-4/610HLF Problem
  225. What pots are best?
  226. Filament problem: help please!
  227. Fender Sidekick Reverb 65 repair - also, schematic?
  228. Ampeg Jet II J12T Buzzing
  229. Peavey XR600C...
  230. Need some help with a Peavey Delta Blues.
  231. Transformer Failure on Classic 30??
  232. Help a Newbie Correct a Stupid Mistake..
  233. Help a noob? AVT150h dead after mismatch
  234. Peavey Classic 20 Power Tubes Won't Light...
  235. Peavey Heritage output drive xisitors
  236. Marshall MG100 HDFX Effects Problems
  237. tsl power transformer question
  238. 1980 Silverface Deluxe - tube/tremelo issues
  239. Channel Isolation Resistors Fender/Marshall - how low can you go?
  240. sunn mixer pots
  241. OT Taps - Can they be identified?
  242. TOA idle current setting process??
  243. Transistor heatsink shoulder washers
  244. Hot Rod Deville 212 -- Blown Fuse
  245. Frontman 212R no output on drive channel
  246. Optocoupler in BF amps
  247. Hartke HA2000 compressor issue
  248. How do I remove the overdrive board on TSL????
  249. Premier Model 76 Amp
  250. Marshall MG100DFX Help Please!