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View Full Version : Maintenance, Troubleshooting & Repair



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  1. Resurrected Peavey Triumph 60
  2. Marshall AS80R
  3. Eventually blows fuse
  4. help finding marshall pot
  5. Peavey Renown 400 Reverb problem
  6. Ampeg VL 502 lost all power...
  7. PT for a tiny supro SE amp from 1949?
  8. Fender Roc Pro 1000 Reverb Not Working
  9. Peavey Deca 700
  10. Fender Twin Reverb Sliverface - Speaker Noise
  11. Sub for 2SJ50/2SK135?
  12. Looking for replacement pot for Halfer LH 500 power amp
  13. Peavey M2600 Mark V no audio
  14. 90's JCM 900 hum on High mode
  15. Tube PT Troubleshoot
  16. Biasing Chinese EL84's
  17. Marshall AVT150h Input ???
  18. stumped; Fender pre-CBS Concert 6G12a trem issue
  19. Mesa Boogie Mark IIA not channel switching
  20. Peavey sc400
  21. resistor codes
  22. Behringer ACX 1000
  23. Silvertone 1474 Twin Twelve - PLEASE HELP !!!!
  24. 5150 ii...super bad feedback!
  25. Help with transistor sub
  26. SVT B-2r fan no working
  27. Houston area shop is looking to hire a repair technician
  28. Strange voltages across bridge rectifier
  29. Low Ghost Notes in a Tweed Gibson - Intermodulation Distortion?
  30. JCM800 blowing 0.5A HT fuse - could use some help please
  31. Peavey TKO 65 Bass Amp Noise
  32. MosFet Identity Help
  33. What is a reasonably priced 12ax7?
  34. HELP! Marshall MG100HDFX
  35. Randall RG-75D
  36. 1960 Bassman Weird Oscillation
  37. Ashton Viper 100 Head
  38. Filthy chassis
  39. reissue Bassman gut shots?
  40. Fender Twin Amp - Pro Tube Series
  41. Fender Dlx Rev PT
  42. Intermittent hum issue with Frontman 15G
  43. Marshall AVT100
  44. Identifying Bias Resistor In 60's Ampeg Jet
  45. Peavey classic vtr problems
  46. Marshall JTM / JCM600 PSU Caps
  47. Domino Resistor Question
  48. Marshall G100R CD Power Supply Resistors
  49. Fixing an Epiphone SoCal 50
  50. fender twin reverb low thud
  51. Behringer BX4500H, hum (not DC), no signal
  52. Oldy butta goody
  53. Trouble shooting
  54. Super Twin Reverb
  55. Moist Filter Caps?
  56. Are my speakers beyond repair?
  57. Carvin X-100B Buzzing
  58. AC30 TBR noisy phase splitter
  59. SNAKES!!!
  60. peavey channel cuts out at volumn under 7
  61. Marshall JPM-1 pre amp battery replacement?
  62. I've been reading about using a light bulb limiter
  63. More JC-120 woes
  64. Johnson JA-40WT Footswitch
  65. A multitude of tube questions
  66. bad hum Blues Junior
  67. Screen resistor question
  68. Marshall AVT 100 foot pedal cable
  69. 5E1/5F1 Death Cap
  70. New amp build, tons of issues...
  71. Fender Frontman 25R Channel Problem
  72. Blues Junior Humming
  73. Champ 5e1 sounds like an analog synth...WTF?!
  74. GK 400RB III no bias voltage
  75. Marshall Avt150H
  76. Marshall vs 100 head
  77. Sovtek 5881WXT bias
  78. HT-5 Clean Channel problem
  79. Blew out my Crate??
  80. Peavey Pacer problems
  81. Fender Rhodes suitcase model fr7054 is oscillating
  82. reforming caps.
  83. randall rc75d
  84. Crate GFX 212 cutting out
  85. Anybody know of any good books or info on electronic repair to buy or download
  86. Bugera 333xl 60htz buzz
  87. Help for a VOX solidstate
  88. too much preamp gain in my ampeg v2?
  89. 6eu7 to 12ax7
  90. Ugly octave sound
  91. reverb transformer
  92. Fender Super 60 - how to get the board out?
  93. Peavy backstage
  94. Marshall AVT150H No lights no fans no Sound... need your Help
  95. Ampeg v4 tubes glowing red
  96. JCM900 4100 Problem
  97. Ampeg vl 502 got really quiet all of a sudden...
  98. Change speaker impedance??
  99. fender twin amp volume surge in effects loop
  100. Baldwin C1 amp Fuse size
  101. Johnson 40W tube amp combo
  102. Peavey kb/a 100
  103. Ampeg Reverbrocket R12R No Tremolo
  104. Ampeg B2 Combo Explodin'
  105. AC30 Top Boost Pulsating Tremolo??
  106. Peavey Bandit 112 powers up no sound
  107. Getting inside my Behringer acx1000 amp
  108. Could someone tell me what a cross for a "Reverb Pan type M" would be.
  109. Distortion channel trouble, B-52 AT-212
  110. discounted SED factory seconds
  111. Marshall TSL100 head model year 2001
  112. JCM 800 loud cracking sound
  113. Vox V1143 Super Beatle schemo
  114. Mesa Lone Star Screen Grid Resistor Values
  115. Quasi Complementary Output Stage Design Question
  116. 12ax7 - 334V schem says 185V ???
  117. Aluminium TO3 insulators??
  118. Deluxe Reverb Buzz
  119. Wanted to get some advice about starting reconing at my amp shop. Good idea?
  120. Crate v18 Catastrophe
  121. Fender Bassman 300 whats the b+ voltage?
  122. Lab Series enigma
  123. Fender Princeton 65 dsp Distortion channel cutting in and out.
  124. marshall jcm3210 mosfet - gain pot w/pull switch
  125. The Twin jack
  126. Embarassing question about tube retainers.
  127. Fender 75 wont go low?
  128. Roland cube 60 broken lead channel.
  129. JCM900 4500
  130. Replaced Power Caps but Now No Clean Channel
  131. Ampeg ba115 blows fuses
  132. Gallien Krueger 1000RB Oscillating
  133. Crate Stealth GT50 doesn't have any Vol on Dst channel
  134. f^*%ing Blues Jr
  135. Ripped Cone repair method
  136. Silverface Bassman 135 Ext Spkr jack...?
  137. Loud hum and blown fuse
  138. AVT150HXT Marshall head, wont play lows
  139. IIEEEE! Is this thing glued together??
  140. Behringer PMP5000
  141. Identify Parts Please...
  142. Is this a dead output transformer?!?
  143. mt54
  144. cathode resistor and cap, SFTR vs AB763
  145. F6.3l fuse
  146. Marshal 5213 Mosfet
  147. Super Reverb weak vibrato
  148. Loss of Gain in a Crate V1512
  149. Need help fixing simple SWR Triad speaker wiring
  150. How to bias an Ampeg Gemini VI gs15r
  151. VOX VT 50 crackling
  152. Ampeg B18-N Output Tubes Run Hot
  153. 65 Twin Reverb RI Reverb Noise
  154. 65 Twin Reverb RI Reverb Noise
  155. Blues Jr reverb problem?
  156. Blues Jr. Reverb Buzz
  157. Help needed with a TSL 100 head !!
  158. DeVille bias pot problem
  159. Tone Stack Calculator - Traynor
  160. AC15 has output but no sound...
  161. Mesa Lonestar special - whooshing sound
  162. Peavey Nashville 400
  163. Earth bassman 4x12 Low volume/dirty tone issue
  164. Kustom K150-5 PA no reverb
  165. Re-capping Gemini I question
  166. peavey PA 120
  167. Tube type question?? Vox
  168. Electrolytic cans voltage ratings...
  169. A Problem with the old model c?, Peavey cs800 power amp Loud Popping
  170. Source for A1M 12MM miniature pot
  171. Behringer GMX110 volume issue clean vs dirty
  172. Need Help Fender Acoustisonic
  173. red plating?
  174. "Non-serviceable" Fender amps
  175. Acoustic 150B in horrible condition
  176. Weather Strip?
  177. Marshall fuseholders
  178. moving to the USA
  179. Vox VT50 volume dependent hum?
  180. peavey tnt 130
  181. Marshall Mosfet Lead Output Stage Problem
  182. Mesa Boogie MKIII blowing fuses
  183. Looking for Fender Frontman 212R B 50K Pot
  184. Cold bias on Epiphone Triggerman
  185. Buzz
  186. Deoxit
  187. Twin Reverb - help with troubleshoot
  188. Fender Blues Deville 1994 - Cutting Out
  189. Hartke 3500 distortion in preamp
  190. heater wire for a Kalamazoo reverb 12 I just got
  191. marshall 6100 trouble
  192. Fender Super Sonic Effects Loop Issue
  193. Hello Classic 30 question.
  194. Setting bias on a Ampeg SVT 4 Pro
  195. Cap Replacement...Which caps to use
  196. Lonestar Special 5w & 15w fade out
  197. Marshall DSL 100, loudspeaker out, 16 ohms ok but parallel 4,8 ohm no sound
  198. Lab Series L4 Bass Head 200 watts, IC sub for CA3094ae Op Amp
  199. Popping/Crackling Blues Jr on Startup
  200. vibro champ
  201. Please help with my Peavey Classic 50!
  202. Peavey Renown Problem
  203. Fender Twin Reverb-less 65 RI
  204. Musicman 2100 RD line out?
  205. Thank you to the kind contributors here
  206. help me put humpty together again(Sound City Content)
  207. Fender Blue Deluxe Problem
  208. Distorted Reverb- SF Super Reverb
  209. Fading Marshall
  210. I don't think tube amps are supposed to emit smoke....
  211. Removeing the groundswitch in a Fender ab763
  212. B-52 AT100 head trouble
  213. Walter Woods parts
  214. Ampeg v4 bias supply issue
  215. Relays in Marshall TSL 100, channel switching issues
  216. Carvin BelAir troubles
  217. Roland JC-77 noisy Chrous OFF mode
  218. Roland Cube 60 Chorus CH60 - Help Chorus broken!
  219. Marshall valvestate vs65r loud pop
  220. Heater wiring for 6CG7 tube
  221. Mesa Boogie Rect-o-verb
  222. Anyone know the B+ Voltage of Marshall DSL401
  223. Randall pro-tube 2000 no sound. HELP!
  224. big trouble in home brew
  225. Problem with Laney TT100H
  226. randall rg50tc advertised as el34's sold with 5881's???
  227. Effects Loop Bleed Issue
  228. Marshall MG100 HDFX Burnt IC1
  229. GK 400RB blowing fuse on start-up
  230. Epiphone Galaxie 25
  231. Low volume issue
  232. Kustom 250 Fuzz issue
  233. Triaxis Troubleshooting
  234. Peavey kb 100 speaker replacement.
  235. Need a little help guys
  236. B-52 AT100
  237. Q: 1986 Marshall - troubleshooting
  238. stood on lead roland cube 20 dead. Help please
  239. Beginner advice
  240. Epiphone triggerman speaker?
  241. BF Showman Driver Stage Hum
  242. Trouble with Ampeg V-4
  243. BF Bandmaster rebuild troubleshooting
  244. Ruby Reverb spring repair
  245. OT Shunt biasing question...
  246. Fender FM212R Reverb Failure
  247. Yamaha T50C Soldano Overdrive Hum
  248. Need to install grounded power cable - advice
  249. 5E3 serious crackling
  250. Crate GX80 Channel switching