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View Full Version : Maintenance, Troubleshooting & Repair



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  1. Nylon tensile threads in cables
  2. Melted Black Glue
  3. Issue with Crate TX50DB Limo battery amp
  4. 5150 combo problem
  5. possibly not the best cap job in the world...
  6. Peavey XXX low volume
  7. mystery in Dual Showman - where is the wire?
  8. Component Quality
  9. Fender G-DEC Junior Problems
  10. SWR Workingman's 12 Outputs run hot then blows fuse
  11. [B]DR Re-issue "blanking out"[/B]
  12. Demeter Help
  13. Fender Stage 100 Amp - How to get the PCB Out
  14. JCM800 2210 has squeels and audio leakage
  15. Boogie Mk IIA ch switching relay noise
  16. Mesa DC3 strange noise
  17. 5150 combo with reverb problem
  18. Trace Elliot AH250 - Starts to spark after 30min
  19. Replacement OT wiring for Carlsbro 50 Top
  20. Silvertone Low Preamp Plates
  21. Bass Amp Repairs
  22. broken Ampeg SVT 4 Pro - help?
  23. Acoustic G60t squeal
  24. Carlsboro Stingray pro. FX section not working
  25. what can i use in place of 1N4757?
  26. Marshall superlead plexi 100 watt
  27. Marshall AVT 150H Parts ?
  28. Marshall tsl602 bias drifting
  29. Reverb problems
  30. Peavey 300 combo bass amp, No signal
  31. How much ac ripple is considered acceptable?
  32. Acoustic 450 missing 40409HV and 40410HV
  33. JC50 power section problem
  34. Insulation under tag board
  35. Fender Prosonic heads up
  36. Shocking 5E3 clone problem!
  37. ampeg ba-115 bass amp.
  38. Ashdown Radiator 1 - how to access chassis?
  39. Peavey Bandit 112 Transtube crackling
  40. Peavey Alpha Bass sounds "Alphul"
  41. Mesa DC 10 low output
  42. Marshall AVT150 - DC volts on output?
  43. Marshall AVT100
  44. LINE6 SpyderII-Fireworks-HELP
  45. Low output and distortion.
  46. Combo 115 Peavey
  47. Bluesbreaker RI hum - suggestions
  48. old Alamo amp
  49. Peavey Bandit 112 TransTube
  50. Roland Studio Bass 100
  51. FENDER M-80 Chorus(chorus not working)
  52. Marshall JCM 2000 clean channel Help
  53. Metro 1987X build problems
  54. SVT 4 Pro gets low and distorted when loaded
  55. PV C30 Reverb
  56. Introducing a post overdrive tone circuit
  57. SVT4PRO won't run cold
  58. Princeton 112 plus potentiometers
  59. 5E3 clone with pos. voltage on the grids
  60. Marshall DSL tubby sound
  61. Need experienced advice on b-52 at-100 problem
  62. TAD EL84s in Peavey Classic 50
  63. Marshall Valvestate 15-Powers on..Low hum, no sound;sometimes amp works fine
  64. Where to buy old Fender knob
  65. Marshall MG100HDFX head wont turn on!!!
  66. Marshall JTM 30 conversion to 110 volts from 230 volts
  67. what type of variac to buy
  68. Trace Elliot acoustic amp with DC on pots
  69. crate GX-65 blows fuses
  70. Yamaha P7000S
  71. vox berkeley II 1081
  72. Rectifier for Sovtek Mig 50?
  73. i had an electric shock with my amp and my audio interface
  74. Washed the numbers off the knob!
  75. 10V Transformer
  76. What circuit is my Twin Reverb?
  77. Marshall 4212 OT Question
  78. Replacing driver transistors Lab Series
  79. Polytone Mini Brute II
  80. Marshall 8080 overseas voltage adaptation
  81. tda 7293 Remount Solution
  82. Line 6 Spider II amp no distortion
  83. Trouble installing VVR - Help please
  84. Distortion in Twin Reverb
  85. Peavey Max115 Bass amp fades away
  86. Divided by 13 head with issues
  87. DOD Bass Grunge FX92 issue
  88. marshall 4210 jcm 800 help!
  89. Ampeg B2RE limiter light-distorting
  90. Fostex A-8LR Tact Switches
  91. when inserting a current limiting R is very difficult
  92. Fender Twin Wierd noise from mid e.q.
  93. Ampeg SVT 200T Problem!
  94. Original Speaker Ohmage That Came With Crate CR-IIR
  95. OzValveAmps is back!
  96. Fender DeVille 212, low low power
  97. Marshall MG100HDFX blown TD7293
  98. ep-2 problem
  99. Very low output on '65 Ampeg Reverberocket R12-R-T
  100. Resurrected Peavey Triumph 60
  101. Marshall AS80R
  102. Eventually blows fuse
  103. help finding marshall pot
  104. Peavey Renown 400 Reverb problem
  105. Ampeg VL 502 lost all power...
  106. PT for a tiny supro SE amp from 1949?
  107. Fender Roc Pro 1000 Reverb Not Working
  108. Peavey Deca 700
  109. Fender Twin Reverb Sliverface - Speaker Noise
  110. Sub for 2SJ50/2SK135?
  111. Looking for replacement pot for Halfer LH 500 power amp
  112. Peavey M2600 Mark V no audio
  113. 90's JCM 900 hum on High mode
  114. Tube PT Troubleshoot
  115. Biasing Chinese EL84's
  116. Marshall AVT150h Input ???
  117. stumped; Fender pre-CBS Concert 6G12a trem issue
  118. Mesa Boogie Mark IIA not channel switching
  119. Peavey sc400
  120. resistor codes
  121. Behringer ACX 1000
  122. Silvertone 1474 Twin Twelve - PLEASE HELP !!!!
  123. 5150 ii...super bad feedback!
  124. Help with transistor sub
  125. SVT B-2r fan no working
  126. Houston area shop is looking to hire a repair technician
  127. Strange voltages across bridge rectifier
  128. Low Ghost Notes in a Tweed Gibson - Intermodulation Distortion?
  129. JCM800 blowing 0.5A HT fuse - could use some help please
  130. Peavey TKO 65 Bass Amp Noise
  131. MosFet Identity Help
  132. What is a reasonably priced 12ax7?
  133. HELP! Marshall MG100HDFX
  134. Randall RG-75D
  135. 1960 Bassman Weird Oscillation
  136. Ashton Viper 100 Head
  137. Filthy chassis
  138. reissue Bassman gut shots?
  139. Fender Twin Amp - Pro Tube Series
  140. Fender Dlx Rev PT
  141. Intermittent hum issue with Frontman 15G
  142. Marshall AVT100
  143. Identifying Bias Resistor In 60's Ampeg Jet
  144. Peavey classic vtr problems
  145. Marshall JTM / JCM600 PSU Caps
  146. Domino Resistor Question
  147. Marshall G100R CD Power Supply Resistors
  148. Fixing an Epiphone SoCal 50
  149. fender twin reverb low thud
  150. Behringer BX4500H, hum (not DC), no signal
  151. Oldy butta goody
  152. Trouble shooting
  153. Super Twin Reverb
  154. Moist Filter Caps?
  155. Are my speakers beyond repair?
  156. Carvin X-100B Buzzing
  157. AC30 TBR noisy phase splitter
  158. SNAKES!!!
  159. peavey channel cuts out at volumn under 7
  160. Marshall JPM-1 pre amp battery replacement?
  161. I've been reading about using a light bulb limiter
  162. More JC-120 woes
  163. Johnson JA-40WT Footswitch
  164. A multitude of tube questions
  165. bad hum Blues Junior
  166. Screen resistor question
  167. Marshall AVT 100 foot pedal cable
  168. 5E1/5F1 Death Cap
  169. New amp build, tons of issues...
  170. Fender Frontman 25R Channel Problem
  171. Blues Junior Humming
  172. Champ 5e1 sounds like an analog synth...WTF?!
  173. GK 400RB III no bias voltage
  174. Marshall Avt150H
  175. Marshall vs 100 head
  176. Sovtek 5881WXT bias
  177. HT-5 Clean Channel problem
  178. Blew out my Crate??
  179. Peavey Pacer problems
  180. Fender Rhodes suitcase model fr7054 is oscillating
  181. reforming caps.
  182. randall rc75d
  183. Crate GFX 212 cutting out
  184. Anybody know of any good books or info on electronic repair to buy or download
  185. Bugera 333xl 60htz buzz
  186. Help for a VOX solidstate
  187. too much preamp gain in my ampeg v2?
  188. 6eu7 to 12ax7
  189. Ugly octave sound
  190. reverb transformer
  191. Fender Super 60 - how to get the board out?
  192. Peavy backstage
  193. Marshall AVT150H No lights no fans no Sound... need your Help
  194. Ampeg v4 tubes glowing red
  195. JCM900 4100 Problem
  196. Ampeg vl 502 got really quiet all of a sudden...
  197. Change speaker impedance??
  198. fender twin amp volume surge in effects loop
  199. Baldwin C1 amp Fuse size
  200. Johnson 40W tube amp combo
  201. Peavey kb/a 100
  202. Ampeg Reverbrocket R12R No Tremolo
  203. Ampeg B2 Combo Explodin'
  204. AC30 Top Boost Pulsating Tremolo??
  205. Peavey Bandit 112 powers up no sound
  206. Getting inside my Behringer acx1000 amp
  207. Could someone tell me what a cross for a "Reverb Pan type M" would be.
  208. Distortion channel trouble, B-52 AT-212
  209. discounted SED factory seconds
  210. Marshall TSL100 head model year 2001
  211. JCM 800 loud cracking sound
  212. Vox V1143 Super Beatle schemo
  213. Mesa Lone Star Screen Grid Resistor Values
  214. Quasi Complementary Output Stage Design Question
  215. 12ax7 - 334V schem says 185V ???
  216. Aluminium TO3 insulators??
  217. Deluxe Reverb Buzz
  218. Wanted to get some advice about starting reconing at my amp shop. Good idea?
  219. Crate v18 Catastrophe
  220. Fender Bassman 300 whats the b+ voltage?
  221. Lab Series enigma
  222. Fender Princeton 65 dsp Distortion channel cutting in and out.
  223. marshall jcm3210 mosfet - gain pot w/pull switch
  224. The Twin jack
  225. Embarassing question about tube retainers.
  226. Fender 75 wont go low?
  227. Roland cube 60 broken lead channel.
  228. JCM900 4500
  229. Replaced Power Caps but Now No Clean Channel
  230. Ampeg ba115 blows fuses
  231. Gallien Krueger 1000RB Oscillating
  232. Crate Stealth GT50 doesn't have any Vol on Dst channel
  233. f^*%ing Blues Jr
  234. Ripped Cone repair method
  235. Silverface Bassman 135 Ext Spkr jack...?
  236. Loud hum and blown fuse
  237. AVT150HXT Marshall head, wont play lows
  238. IIEEEE! Is this thing glued together??
  239. Behringer PMP5000
  240. Identify Parts Please...
  241. Is this a dead output transformer?!?
  242. mt54
  243. cathode resistor and cap, SFTR vs AB763
  244. F6.3l fuse
  245. Marshal 5213 Mosfet
  246. Super Reverb weak vibrato
  247. Loss of Gain in a Crate V1512
  248. Need help fixing simple SWR Triad speaker wiring
  249. How to bias an Ampeg Gemini VI gs15r
  250. VOX VT 50 crackling