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View Full Version : Maintenance, Troubleshooting & Repair



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  1. Blown part in Fender Blues Deluxe Reissue
  2. 1980 twin reverb trouble shoot
  3. This may be a stupid question, but..
  4. need some help please!
  5. Peavey C30: moan from the speaker
  6. Fender PS 160 Vocal Amp Trany problems???
  7. New to forum.. please help
  8. soldering iron question.
  9. switch-on transient in solid-state amp
  10. JCM 800 poweramp not fully functioning
  11. Any large retailers still sell fuses???
  12. 1975 Twin Reverb - Which tubes?
  13. Vox Valvetronix - How the F*** do I get this thing apart?
  14. Peavey Deuce: Power Supply Board Component
  15. Crown CE2000....anyone actually repairing this junk?
  16. Acoustic 370 Repair - Atlanta, GA area
  17. Silvertone 1485 dual OT?
  18. watkins tremelo amp (1960)
  19. Fender FM65 DSP lockup
  20. Heater voltages too high?
  21. Ampeg SVT Classic goes into standby on its own
  22. magnatone 213 finished - vibrato doesn't work
  23. Sudden loud buzzing on Ashdown bass amp
  24. Marshall 8100 head hums!
  25. Old Symphonic 16-S Record Player Problems
  26. Bandmaster Reverb vibrato
  27. bandmaster reverb won't adjust
  28. Princeton 65: what to make of TP values
  29. Peavey C30 squeals
  30. M-80 popping buzzing
  31. Is This a Bias Trim Pot?
  32. Another AVT150 TDA7293 problem - please help
  33. Biasing Question: Marshall JCM602
  34. Fender Champion 600 On/off toggle switch
  35. Good book on solid-state troubleshooting and repair
  36. Bad Cat Panther with creeping bias
  37. No chorus effect on JC-120
  38. Engl Powerball
  39. Looking for a Ampeg VH-140C schematics
  40. Dynacord Eminent II
  41. Behringer PMX2000 Fried!
  42. Peavey 5150II Tube Question
  43. Holden Wasp 4xKT88 power tube arcing.
  44. Mark VIII Bass Head
  45. filter cap failure - gradual or sudden?
  46. pcb input jack replacement
  47. Peavey Classic 20 transformer source
  48. High-pitch noise in old tube amp (oscillation?)
  49. JTM Blowing Main Fuse?
  50. Marshall MG100HDFX head broken input jack
  51. Disharmonic distortions
  52. Matching speaker Ohms and amp Ohms
  53. Vox AC15 RE keeps blowing fuses
  54. Fender princeton 112 plus blowing fuses??
  55. Lucky find- what's your best find?
  56. '66 Ampeg Reverbrocket Transformers
  57. Loud hum
  58. Vibro Champ filters self-discharging - why?
  59. Beheinger hum?
  60. Peavey m 2600 old style one channel out
  61. older Roland Cube 60 .....low hummmmmm
  62. Fender HRD channel switching
  63. MusicMan 130, questions.
  64. Mesa V-Twin problem
  65. ic confusion
  66. Help Biasing my Vox ac50 cph
  67. Marshall AVT150H Sound?
  68. My vox ac50 classic plus head wont go off standby.
  69. Help!! I connected a burned my Fender DeVille
  70. Transformers
  71. Heathkit IO-103 oscilloscope
  72. Current rating for heater wiring in power transformer
  73. Cyber Champ preamp dead
  74. B52 AT-100 Reverb Problem
  75. Shorted Power Transformer Primary - Help!
  76. guitar research help
  77. Help with Crate Vintage Club 50
  78. help with Vox amp
  79. Ampeg B4 R slow power up anyone see this before?
  80. Locating Noise
  81. Questions about Bassman70
  82. Transformers for (silverface) Bassman 70
  83. How do I eliminate 120 cycle hum/noise from my solid-state amplifier?
  84. Fuse blow out on Valveking 112 and Amp Won't turn on again
  85. Peavey TNT-no output, and I think it's my fault
  86. Marshall DSL 100 Low Gain Problem HELP!!!
  87. Mesa Boogie Nomad 45 - Reverb INOP
  88. Musicman 2275-130 - tremolo issues
  89. filament supply question
  90. another squealing champ
  91. Orange AD30- Channel Switch Problem
  92. behringer in speaker crossover limiter bulb
  93. JMP -1 12AX7 tube voltages.
  94. ReCap kit from Fliptops.net for my V4
  95. Crate GX1200 devices?
  96. Ampeg VL-503 Blowing Fuses
  97. Help on my jcm 800 mods
  98. Alto power amps
  99. DC Pre-Amp Tube Filaments on vintage Fender - pros and cons?
  100. SWR Baby Blue 2
  101. Question for Enzo on Fender Frontman 25R
  102. Peavey duel 212 and rectoverb problem
  103. Kustom pcb
  104. Fender Supersonic Output Tube Substitution
  105. Peavey Firebass 700
  106. Help with Harmony 303a
  107. amp buzz
  108. Peavey XXX needs a love tap 2 work
  109. Reverb Tank for a Epiphone Blues Custom
  110. Help troubleshooting fender princeton
  111. Princeton Reverb - the immortal hum
  112. Short in amp: house circuit breaker pops, amp fuse does not.
  113. valvestate 8080 blows fuse
  114. Musicman trouble shooting has caused hum, and only hum.
  115. Jcm2000 dsl100
  116. Identify Ampeg PT Leads?
  117. Marshall MG250DFX - Smoke Generator!
  118. switchcraft beauty nuts
  119. There's a baby with a harmonica inside my amp.
  120. Crate GX-65 Transformer popped
  121. mesa boogie toggle switch replacements
  122. 1972 Twin Reverb-Flashing grids/tubes when played with a guitar!
  123. vox ac30 tb 1965 problems
  124. Amp makes high picth sound but not feedback
  125. JC-120 from bad to worse
  126. Sovtek transformer specs
  127. powering rectifier w/6v tap
  128. capstan sandblaster
  129. 50 watt fender OPT reflected Z
  130. Tubes losing power
  131. Silvertone 1484 stray note
  132. "DI YA" Potentiometers
  133. marshall jcm 2000 dsl 50 problem
  134. M80 BASS combo, anybody want to help a dufus??
  135. power transformer problem??? maybe
  136. volume problems
  137. Identify this cap?
  138. Pot for Ampeg Reverberocket 2
  139. Really hot grid resistors!??
  140. Anybody ever fixed a Fender XFL1000 Power Amp?
  141. Problems with AC30 tbx standby/rectifier/fuses
  142. Hum disappears with dummy plug... but what does it mean?!
  143. Classic 30 help
  144. Peavey TNT 150 bass amp has no high gain
  145. marshall head trouble
  146. Pv 5150
  147. Danger of helping Single Post members
  148. low volume output
  149. Gibson ES 150 volume issue
  150. blown bass amp
  151. Marshall DSL401 clean channel cutting out
  152. Smoking resistors in a guitar SS amp
  153. SWR Workingman's 15 Schematic
  154. Ampeg Reverberocket: intermittent noise problem?
  155. Amps with different input voltage rating questions
  156. Fender SS amp no sound
  157. GT Studio Guitar Preamp Help
  158. Marshall avt 100 - no fx
  159. Circiit board repair
  160. Peavey Classic 30 - Tube failure?
  161. obtaining the LM4701T power amplifier ic
  162. Peavey Studio Chorus 210: one channel not working, possible chorus prolblem
  163. Old Standel SI15b outputs
  164. 900 slx trouble
  165. will big ass filter caps newter my tone?
  166. what to check when pwr tube blows?
  167. Spetra 315
  168. Soldering gun, or big-ass iron?
  169. Bogner Ecstasy Squealing
  170. Can someone post me a pic of a Vibrolux power board
  171. How powerful of a soldering iron do I need..
  172. Multimeter Advice......
  173. Cab Speaker Wiring........
  174. Lead free solder rework
  175. deluxe reverb reissue fading out
  176. changing rheostats
  177. Marshall AS-100D plugged to 220V instead 110
  178. PDF Document warning
  179. Deluxe reverb reissue help
  180. fender bandmaster idenification and tremolo problems
  181. JCM 2000 DSL 100 Bias problem
  182. Line 6 Spider III 30 amp....how the heck do you remove the amp from the cab?
  183. very old amp w/non PM speaker. Customer wants PM speaker installed.
  184. GA-20 low power
  185. Trace Elliot Velocette Redplate
  186. Marshall jcm 2000 DSL sound cuts out!
  187. Princeton
  188. Ampeg BA115 blown out from loud playing?
  189. Recapping Ampeg B-15S
  190. TL604
  191. Peavey Studio Chorus 210
  192. Marshall 30dfx very little sound
  193. New ac cord for 100w Twin
  194. Mesa Rectifier Problem
  195. SF Twin - bad 6L6s?
  196. Behringer 180W bias setting
  197. Fixing hum in Roland Cube 60
  198. how far will you go to save/re-use parts?
  199. Peavey Classic 30 with very low volume.
  200. Leaky cap-or not?
  201. 63 Vibroverb bias vary trem motorboating problem
  202. B-52 effects loops
  203. What is a good replacement for ceramic caps (Fender Twin)
  204. Danelectro Centurion Amp Vibrato Issues
  205. Hughes And Kettner Trilogy noise
  206. Weird transformer...?!
  207. servicing amps?
  208. a tip for restoring tolex
  209. Ampeg B2 relay problem
  210. Peavey Classic 50 head no reverb
  211. behringer pmx2000 Wires hooked up wrong.
  212. Marshall TSL100 Main Board
  213. 6ax5 rectifier tube
  214. Replacement OT for vintage Rickenbacker E12 amp
  215. Electrolytic caps useful life?
  216. Carvin xb100 makes noise at high volume
  217. Help! Bandmate ran amps in series and now one has volume problem.
  218. The Twin....knob question
  219. silvertone 1484 looses volume
  220. Weak Reverb
  221. Carvin MTS3200 reverb tank
  222. Question using a extension Cabinet with combo.
  223. Grounded
  224. Need Help Biasing Marshall dsl 100 (1999)
  225. Anyone with a good memory??
  226. Fender Stage 112 Reverb doesnt work??
  227. Help with Hartke
  228. sunn coliseum 300
  229. hartke 3500 bad input
  230. Marshall Valvestate 8280 Distorting on lows and slugish
  231. Marshall AVT150
  232. Jay turser Classic 25 Input Imp
  233. Refurbing and blackfacing my Silverface Twin
  234. help with Carvin amp
  235. 65' Fender BF twin reverb-Tremolo / Vibrato non-functioning help!
  236. Traynor Custom Valve 80 problem
  237. 'color banded' cap replacement
  238. Acoustic 220=speaker killer
  239. pevey valveking 100 212 question
  240. I see Crate's Problem with the Palomino V32
  241. Adding standby
  242. Peavey session 500 (400 B/Gmodule)
  243. need leads or ideas for a replacement Fender switched pot
  244. marshall vs 100
  245. Help! new Tung Sol 6l6gc Tubes make terrible"sqwaking" distortion sound on loud notes
  246. Need supplier for 15mm 20kA pot
  247. Inductors question
  248. Simple octal tube socket question
  249. Old white mallory electrolytic caps..no capacitance ratings..any advise?
  250. marshall jcm900 valve pin voltages