PDA

View Full Version : Maintenance, Troubleshooting & Repair



Pages : 1 2 3 4 5 [6] 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

  1. Crackling, splattering in amp...
  2. MusicMan 1650RD troubles
  3. Marshall JCM900 SL-X 50Watt high gain master volume 2500 Muffled sound
  4. Hot Power Transformer, Budda SD30-II
  5. Fender Twin Reverb....silver face
  6. Parts for a Peavey 212 SF?
  7. Fender Super Sonic 22 Vol and Bass drop on Burn ch.
  8. Deluxe Reverb - weird vibrato oscillator voltages + choppy trem
  9. Problem with Univox U130L
  10. OK comrades...MIG 100B and MIG 100H Differences?
  11. Egnater Tweaker 40-Really bad ground pops on many swithces.
  12. Ampeg SVT Classic Bias Light issue
  13. Crate GTX3500H Tidal Wave - Channel 3 Inoperative
  14. Kustom K200A.4
  15. Eden Nemesis RS210 - 60vdc at speaker output
  16. Vox AD100VT = Fart Machine!
  17. Gibson GA19 RVT tremolo issue
  18. Fender Bassman AA165
  19. 65' twin reverb reissue hum with reverb
  20. Crate V1512 Cracklin, popin, humin...loudly
  21. Pop, fizz, stink, and a new hum on a homegrown tweed tremolux. Looking for ideas.
  22. Roland AC-33 low output
  23. Peavey Classic Chorus 212 channel switching problem
  24. Odd Jubilee switch/pot
  25. HK Tube-sheister 36
  26. SMD code PJ88 Diode SMB8 package
  27. Need a new source for 25uf/25v axial caps.
  28. Peavey replacement basket compatibility
  29. Marshall JCM 800 4211 Combo Blowing HT Fuses
  30. Hot Rod DeLuxe I switching problem
  31. 65 Epiphone Zephyr amp would be the same as Gibson what??? Reverb problems, help
  32. Marshall JCM800 2203 with oscillation on output
  33. JMI VOXAC30 TOP BOOST low headroom.
  34. SPMS repair, IR21531, please help.
  35. Mesa Boogie Nomad 55 strange noise. Please help.
  36. MB Dual Rect Tremoverb
  37. PV 1500 Thermal issue
  38. Gallien Krueger Fusion 550
  39. Marshall JCM800 2205 Problems
  40. Martin Pro Stage lighting
  41. Conductive Eyelet Board
  42. Gibson GA77 RET needs new Power Transformer
  43. Ampeg J-12T RI red plating
  44. Knobs won't come off Bassman 100 combo
  45. Bose PS1 wtf?
  46. Fender Frontman 212R distortion problem
  47. Marshall MF50DFX
  48. SWR Strudio 220 5kHz Oacillation Problems
  49. Spam
  50. PT go BZZZZ
  51. Vox AD60VT - I volunteered to help friend fix amp and am now stuck with just hum
  52. Fender FM212r no channel switching
  53. Fender HR Deville Had a Drink.
  54. JMF Spectra 112 power transformer
  55. jcm800 mk2 lead pitch noise in V1
  56. Eden WTB700 distortion control faulty
  57. 70's Ampeg V4: early breakup
  58. Belton reverb tank went microphonic (relatively short lived)--this the new normal?
  59. Help need board for my ibanez roadstar base
  60. diode and cap quest
  61. CRATE FXT 120 No Sound Output??
  62. Mono Preamp, Stereo Power Amp: Not Enough Gain!
  63. Ampeg Gemini 2 recapping problems
  64. Sunn 1200S PA distorting
  65. Musicman RP-65 (2165-RP) distorted sound, even at low volumes
  66. Behringer Europower PMP4000
  67. Question on preamp section - Elka tube amp
  68. Musicman 2475 - 150 questions
  69. NJM2147D Substitute?
  70. De-buzzing MusicMan HD130 - any suggestions?
  71. Randall RD50 Bias
  72. Crate TD50B replacement input jack - parts numbers/suppliers?
  73. SVT CL 1997 slm pre out power in issues
  74. Low volume, possible cathodyne issue, help needed.
  75. peavey 112 transtube overheating problem
  76. BOSS TR-2 Tremolo with audible oscillator ticking in bypass mode
  77. Peavey Combo 115
  78. Info on spectrum analyzer, signal analyzer, etc (HP 3561A)
  79. Blues Deluxe RI - relay question
  80. Replacement Input Jack for Eden Nemesis N12
  81. Polytone mystery
  82. Resistor power rating query.
  83. Vox AC4TV output transformer replacement
  84. Hartke LH1000 balance ??
  85. Low volume in preamp stage
  86. Marshall 2205/2210 pots argh!
  87. SWR Workingman's 15 blow fuse
  88. Silverface 135 UL 'output balance pot'
  89. Vintage Ampeg B-100 Bassamp fuse, where is it?
  90. blown fuses Kustom KBA16
  91. Fender Pro Reverb - Hum
  92. Fender Acoustasonic Jr. DSP Effects troubleshooting help
  93. Ampeg BA210 - Lacking volume past 4 on the dial
  94. Swart AST resistor
  95. blackstar series one 45 - schematics
  96. SWR super redhead speaker fire
  97. Vox VT 40 +
  98. Kalamazoo bass 30
  99. Function Generator
  100. Peavey VTM 60 Molex connectors
  101. Want to make my own Biasing test probe for EL84
  102. yamaha EM-150 opamp
  103. OT transformer mismatching
  104. Hot Rod Deville III - clean channel problems
  105. long life axial
  106. Eden Metro amp - power supply problems
  107. Peavey VTM 60 filter caps
  108. Lost the distortion on an Orange Crush 15R.
  109. Bugera 333XL effects loop switching on/off by itself.
  110. Peavey classic VT phase inverter voltages
  111. Peavey 3120 Channel Switching and low volume issue
  112. Thoughts on dropping B+ in Ampeg V4 (another blasted V4!)
  113. Brunetti Star T Rack overdrive characteristic
  114. Peavey PK100
  115. Old Ampeg reverberocket tremolo problem
  116. Question about phase shift oscilator/tremolo
  117. Roland KC350
  118. Volume drop after redplating tubes.
  119. Newly built clone ampeg B15 with 100watt output
  120. Fender 75 Head (1980's) Is this an OK thing? (See Pic) Permenant Cap Drain?
  121. KTD2059Y (D2059) substitute
  122. Help with vintage Gibson GA-40 motor boating on ch1
  123. 5150 filament string
  124. kalamazoo model one tremelo sound when cranked.
  125. Crate V5 - very low volume
  126. What is pulling voltages down in this amp?
  127. Problem with vibrato in Silverface Twin Reverb
  128. Fender Rhodes spares..
  129. Gibson GA5-T crestline B+ low and bias questions
  130. Bad valves?
  131. Gallien Krueger MB150 unpredictably unstable
  132. Ampeg SVT bias:protection circuit
  133. A generalized chassis support for the workbench
  134. how do I get inside an Ashdown After Eight bass amp
  135. Marshall JTM45 reissue very poor tremolo
  136. Epiphone Constellation V Amp - Need Power Switch
  137. Peavey Mark III 1978 Sereis 400GH
  138. AT100 blowing random power resistors
  139. B100R pop on shutoff
  140. Fender Super Champ X2 Channel 2 and FX not working after op amp switch
  141. 1959 Vibrolux 5F11 Fender Fuse rating and 3-prong ground questions
  142. 2203 Oscillation (and solution).
  143. JCM 2000 DSL no output
  144. Marshall JMP making squealing noise
  145. Output Transformer Question: Marshall JCM900 50W
  146. has anyone worked on a roland ac 60?
  147. Marshall amp pot replacement
  148. Problem with noise using a 65amps Ventura
  149. Peavey Backstage 30 - Loud Constant Hum
  150. Testing Caps (out of circuit): What do you use and why?
  151. parallel silver mica caps opinions please
  152. Peavy CS-400 Blowing resistors
  153. Egnater Rebel 20 Plate V and other issues
  154. prosonic noise v3
  155. Roland JC160 no chorus
  156. very particular Fender amp repair / restoration in Los Angeles (Burbank / NoHo)
  157. Marshall 3210 Mosfet head. Can't turn off the boost channel.
  158. Roland Bolt-60 reconditioning
  159. 71 Super Reverb Slow To Engage Vibrato
  160. Davis Model 405 Schematic
  161. Marshall VBA 400 repair
  162. Testing Reverb tank
  163. Mesa Lonestar Special......
  164. Epiphone Pathfinder
  165. Legend R&R 50
  166. Yet another Bugera 333 XL - 212 fuse blows at power up
  167. Fender Deluxe 112 Plus Problem
  168. 67 Ampeg Reverberocket 2 Cap job help
  169. Capacitor voltage question Musicman HD120 2KV cap!
  170. Peavey Special 130 not powering on
  171. Marshall Valvestate vs100 reverb not working, here s what I tried
  172. Lifting Board For Component Replacement. 1971 Super Reverb
  173. What's wrong here? - Gibson GA5 Crestline
  174. Repost peavey 212 special with better info lead channel not working.
  175. Fixing up a Gibson Atlas
  176. Bias on Ampeg BA115 too low cause occasional random-ish noise?
  177. Reissue AC15 power tube consumption
  178. Mesa Impulse 600 No Output
  179. Fender Hot Rod Deville - Octave distortion effect on More Drive
  180. Mesa 2ch Recto no signal through input.
  181. I need a couple of good 6SL7's
  182. Randall RG50TC Biasing
  183. Fender Bassman 200
  184. 6X4WA instead of 6X4?
  185. Pointy EL34's ?
  186. No Trouble Found
  187. Rivera Clubster 45 noisy
  188. Power transformer installation.
  189. Line 6 Spider 4 Preset pot value.
  190. Components selection guide. I have found a very useful tool for everyone. Enjoy!!!
  191. Gibson GA-15 RVT Feedback / Howling
  192. Sovtek Midget troubleshooting
  193. Bias to high
  194. PT wiring question
  195. Mojotone MOSFET switching board causing Buzz
  196. Glass diode rectifier? Silvertone stereo console question
  197. Pre-Freyette VHT 50CL - Power supply burned up. Need gut shot to repair
  198. Unhooked the transformer long ago, not sure how it goes back, pics
  199. Here's an easy circuit, with hopefully a simple diagnosis, but I'm still new at this.
  200. Bassman AA864 Question
  201. Checking bias after transistor sub
  202. Peavey 212 special lead section no light no sound
  203. Looking too build a 100watt bass amp what one Fender Peavey ?
  204. Marshall DSL 40C - clean channel dropping volume once amp is heated
  205. Hiwatt experts please chime in...Mark Huss ?
  206. Marshall 2555 Silver Jubilee build
  207. Fender Champ XD No Output
  208. LANEY VC30 annoying noise
  209. Marshall VS100 combo noise
  210. 1989 Marshall JCM 800 2204 low volume problem
  211. Roland Blues Cube BC-60 - v low output
  212. Here's a twist
  213. True Confessional
  214. Bassman 300 boat anchor
  215. bf vibrochamp circuit with low low output
  216. Ampeg B-100R pilot light
  217. Low voltages under load from PSU equal bad PT?
  218. VHT Lead 40 Blowing Internal Fuses
  219. Randall RG 235 DS schematics ??
  220. Bogen J330 Mic Input Problem
  221. Scratchy POST VOLUME pot Peavey Combo 115
  222. 1954 Bogen VP17X Bass Control
  223. Another day, another dead acoustic pickup
  224. Harmony H306a low output volume
  225. Eden WT-800 Bridged Mono oscillation
  226. Sunn Model T reissue squealing
  227. Marshall JCM900 - 5881 version is too bright
  228. Marshall JCM800 Lead (2205) VERY HI HUM---HELP!
  229. FMC authorized repair
  230. Measuring output power
  231. Sinmarc power transfomer R2280 replacement needed
  232. Polytone problem...
  233. Shure Pro Master 700 Mixer - Need Advise Please
  234. Gibson GA5t Crestline voltage question
  235. Mis-branded Fender parts.
  236. Ampeg V4 questions on cap value
  237. Sunn Model T reissue thudding
  238. Peavey CS800X 50 watts per side max?
  239. Who knows acoustic pickups?
  240. Gibson GA 5t whitepanel making crackle, pop, fizz
  241. Reverb Oscillation
  242. Standel preamp module
  243. Kustom IV Bass Head Schematics?
  244. 6L6GC, wired one-pin off CW kills bias probe
  245. amp help
  246. Ampeg B2 head scratcher
  247. Deluxe reverb RI blowing fuses only occasionally
  248. fender passport 250 circuit diagram
  249. Carvin R600 Output relay problem
  250. Ampeg V4 Standby Problem